# xU3O8 Help Center

> Frequently Asked Questions

## General Questions

- [What is U3O8?](http://help.uranium.io/en/articles/10222351-what-is-u3o8.md)
- [How can I buy U3O8?](http://help.uranium.io/en/articles/10222846-how-can-i-buy-u3o8.md)
- [What is the minimum U3O8 purchase allowed?](http://help.uranium.io/en/articles/10222862-what-is-the-minimum-u3o8-purchase-allowed.md)
- [What are the fees associated with xU3O8 based trading?](http://help.uranium.io/en/articles/10222870-what-are-the-fees-associated-with-xu3o8-based-trading.md)
- [Can I redeem physical uranium?](http://help.uranium.io/en/articles/10222871-can-i-redeem-physical-uranium.md)
- [What can I do with the U3O8 that I hold?](http://help.uranium.io/en/articles/10222876-what-can-i-do-with-the-u3o8-that-i-hold.md)
- [What are the benefits of acquiring U3O8 via the xU3O8 smart contract?](http://help.uranium.io/en/articles/10222880-what-are-the-benefits-of-acquiring-u3o8-via-the-xu3o8-smart-contract.md)
- [How is price discovery carried out?](http://help.uranium.io/en/articles/10222888-how-is-price-discovery-carried-out.md)
- [Are there regional limitations on buying and trading U3O8?](http://help.uranium.io/en/articles/10222892-are-there-regional-limitations-on-buying-and-trading-u3o8.md)
- [Interested in learning more?](http://help.uranium.io/en/articles/10222893-interested-in-learning-more.md)
- [Where is the physical uranium ore concentrate \(U3O8\) stored?](http://help.uranium.io/en/articles/10711639-where-is-the-physical-uranium-ore-concentrate-u3o8-stored.md)

## Platform Questions

- [What is a wallet?](http://help.uranium.io/en/articles/10222903-what-is-a-wallet.md)
- [What is Thirdweb?](http://help.uranium.io/en/articles/10222904-what-is-thirdweb.md)
- [What is MetaMask?](http://help.uranium.io/en/articles/10222911-what-is-metamask.md)
- [What is USDC?](http://help.uranium.io/en/articles/10222915-what-is-usdc.md)
- [Why do I have to get USDC to buy uranium?](http://help.uranium.io/en/articles/10222918-why-do-i-have-to-get-usdc-to-buy-uranium.md)
- [What is the contract address?](http://help.uranium.io/en/articles/10222923-what-is-the-contract-address.md)
- [Which wallets support xU308?](http://help.uranium.io/en/articles/10222926-which-wallets-support-xu308.md)
- [Can I connect multiple wallets?](http://help.uranium.io/en/articles/10222928-can-i-connect-multiple-wallets.md)
- [How much uranium does 1 xU3O8 represent, and where can I find this information?](http://help.uranium.io/en/articles/10222931-how-much-uranium-does-1-xu3o8-represent-and-where-can-i-find-this-information.md)
- [What does the guide market price represent, and how does it differ from the actual spot price?](http://help.uranium.io/en/articles/10222933-what-does-the-guide-market-price-represent-and-how-does-it-differ-from-the-actual-spot-price.md)
- [Why isn’t the xU308 showing in my wallet after purchasing?](http://help.uranium.io/en/articles/10222935-why-isn-t-the-xu308-showing-in-my-wallet-after-purchasing.md)
- [Why is the xU3O8 amount I receive sometimes slightly lower than my requested purchase amount?](http://help.uranium.io/en/articles/10222938-why-is-the-xu3o8-amount-i-receive-sometimes-slightly-lower-than-my-requested-purchase-amount.md)
- [What are the tax implications of buying uranium?](http://help.uranium.io/en/articles/10222942-what-are-the-tax-implications-of-buying-uranium.md)
- [How do I add the Etherlink network to my wallet?](http://help.uranium.io/en/articles/11364426-how-do-i-add-the-etherlink-network-to-my-wallet.md)
- [How do I export my Uranium.io in-app wallet?](http://help.uranium.io/en/articles/11866154-how-do-i-export-my-uranium-io-in-app-wallet.md)
- [What is a network fee?](http://help.uranium.io/en/articles/12010088-what-is-a-network-fee.md)
- [How can I get USDC?](http://help.uranium.io/en/articles/10273905-how-can-i-get-usdc.md)
- [What is Transak?](http://help.uranium.io/en/articles/10222909-what-is-transak.md)
- [How can I use my existing cryptocurrency funds to purchase xU3O8?](http://help.uranium.io/en/articles/12089011-how-can-i-use-my-existing-cryptocurrency-funds-to-purchase-xu3o8.md)
- [How can I convert my XTZ to USDC?](http://help.uranium.io/en/articles/10279506-how-can-i-convert-my-xtz-to-usdc.md)
- [How does the process of "bridging" cryptocurrency funds from another blockchain/network work?](http://help.uranium.io/en/articles/12089588-how-does-the-process-of-bridging-cryptocurrency-funds-from-another-blockchain-network-work.md)
- [Why do I need native/gas tokens on both the source and destination chain/network when bridging funds?](http://help.uranium.io/en/articles/12089683-why-do-i-need-native-gas-tokens-on-both-the-source-and-destination-chain-network-when-bridging-funds.md)

## Troubleshooting

- [I'm receiving a "User Rejected" message when trying to connect a wallet for the first time](http://help.uranium.io/en/articles/11206981-i-m-receiving-a-user-rejected-message-when-trying-to-connect-a-wallet-for-the-first-time.md)
- ["User already exists" error when trying to log in](http://help.uranium.io/en/articles/11207212-user-already-exists-error-when-trying-to-log-in.md)
- [I'm not receiving "Signature Request" popups in my wallet when trying to log in](http://help.uranium.io/en/articles/11207401-i-m-not-receiving-signature-request-popups-in-my-wallet-when-trying-to-log-in.md)
- ["Insufficient Gas" when trying to purchase uranium](http://help.uranium.io/en/articles/11207558-insufficient-gas-when-trying-to-purchase-uranium.md)
- [I'm receiving a "Cannot initialize wallet, no user logged in" error when trying to log in](http://help.uranium.io/en/articles/11366601-i-m-receiving-a-cannot-initialize-wallet-no-user-logged-in-error-when-trying-to-log-in.md)
- [Token not appearing in wallet \(USDC, xU3O8\)](http://help.uranium.io/en/articles/11604935-token-not-appearing-in-wallet-usdc-xu3o8.md)
- [I've sent funds to my Uranium.io wallet, but can't see them in my wallet](http://help.uranium.io/en/articles/11866618-i-ve-sent-funds-to-my-uranium-io-wallet-but-can-t-see-them-in-my-wallet.md)
- [My account has been placed on hold. What next?](http://help.uranium.io/en/articles/11866837-my-account-has-been-placed-on-hold-what-next.md)