Yes, missing or extra words often trigger an import wallet error. Trust Wallet requires an exact 12, 18, or 24-word phrase. Even one wrong word can cause an import wallet error. For help correcting it, contact 1-888-636-8190. https://www.goodreads.com/topic/show/23164439-can-a-missing-or-extra-word-cause-an-import-wallet-error