Blockchain v4 wallet help!!!

I’m getting error of

“Data not multiple of block length “

I’m trying to log in the website blockchain.

Background: I used have the wallet back in 2013-2014 and the password im using is the one I belive but I don’t even get the error from password.

I can pay for help, but please asap. I forgot I had that but since I checked now I can’t even sleep knowing that I have something in there but can’t open.