Why can't I buy on Coinbase Wallet?

I'm having trouble purchasing cryptocurrency on Coinbase Wallet, can you help me understand why? I've tried multiple times but keep encountering errors. Is there a specific issue with my account or are there certain restrictions I'm not aware of? I've checked my balance and it's sufficient, so I'm not sure what the problem is. Could it be related to my location, or are there other factors at play? I would really appreciate some guidance on how to resolve this issue and successfully make a purchase on Coinbase Wallet.