Invalid Password message iXpand

I have exactly the same problem… i use my drive un a daily basis … today, trying to access my vault, asked me for the password as usual but (i always use my touch Id either for my iphone pr ipad)  today it did not recognized my touch id !! And when i put my password didn’t recognized it either. Password is correct. I noticed that when i put any wrong password it appears under the password field “wrong password” ( first picture) but when i put the correct password, is a separate pop up message stating password is wrong.(second picture)

any help will be appreciated. I have very important files in the vault, so please the option to reformat the ixpand drive is not an option for me… thanks on advance.