The answer
The blockchain may accept the transfer, but the exchange may not credit it until service resumes—or at all if unsupported.
What to do next
Check the network-and-asset status before sending, not just address validity.
Coinbase crypto exchange
Exchange brand/tool is relevant to source material; affiliate eligibility subject to approval. Availability, supported assets and local eligibility must be checked before signing up or buying.
Visit Coinbase crypto exchange ↗Official provider link · Compare suitability and availability before choosing.