Why can't I send Crypto on Coinbase?

I'm encountering an issue where I'm unable to send cryptocurrency through my Coinbase account. I've double-checked my balances and the funds are available, but whenever I attempt to initiate a transaction, I receive an error message. Could you help me understand why this might be happening? I've ensured that I'm logged in correctly, my account is verified, and there are no pending transactions that could be blocking the send. I'm also aware of the potential network congestion issues with certain cryptocurrencies, but I'm not sure if that's the case here. What are some steps I can take to troubleshoot this issue and ensure I can send my crypto successfully?