I don't know if you solved this in the end, but it looks like you're swapping the first and second characters before doing the ascii conversion. It's only the second and the final character of each word that needs swapping.
Based on the fact you seem to have the correct final letter, I'm going to assume you're swapping the second with the last, then swapping the first with the second, then turning the first into its ascii code.

While I was busy with this error, I already solved the kata "DecipherThis".

I will check. I’ll write as a result.

you have to SWITCH the second and last position elements

you are messing up with the ASCII conversion and also you aren't removing the second element after moving it to the end

Hello. Python. My code passes sample tests or example tests. (If necessary, I can send, but not here.) But, when there is a full test suite, it produces an almost random number of errors, from 25 to 40. Everything is always identical, except for the differences. The differences between my answer and the solution are always the following:

Answer - 82hbdOh
My - 104RbdOh

Answer - 120YSuUNY
My - 89xSuUNY

Answer - 89rjXpYJBzwwOUnCphr
My - 114YjXpYJBzwwOUnCphr

Here people wrote about double spaces, but this is not a space. And about the fact that always if a word is two letters, then the letters should be interchanged, probably not true, because in the model tests this is not there, in the description either, and in more than half of the full tests there are no errors.
I am writing as a last chance. Because I’ve been here for 3 hours on this error. Thanks for everyrhing.