i am very greatfull to hold some monero in my wallet but i still also have that old account from the beginning of monero , i will search for the seedphrase (i miss 1 word) and post it here , maybe there is a smarter guy then i am who can solve the problem with the missing seedword.
it should be possible to find the missing word , as far as i know it has something to do with different timeframes which used different word pakkages or some like that.
but still happy with the monero i hold in a wallet with original seedphrase
This Monero SE Q&A may interest you:
https://monero.stackexchange.com/questions/3968/missing-one-word-from-25-word-mnemonic-seed