The answer
Sometimes, if each word's correct characters and positions are supported, but a 33-word share will not fit that format.
What to do next
Check the manufacturer's instructions for SLIP39 and verify the result with a legitimate recovery check.
Trezor hardware wallets
Hardware wallet or backup product relevant to a self-custody question. Availability, supported assets and local eligibility must be checked before signing up or buying.
Visit Trezor hardware wallets ↗Official provider link · Compare suitability and availability before choosing.