I'm testing but the whole page does not work, I'm referring to the page: hidden link
Anything I change is not taken. I checked and the field translation settings are correct, I have performed the "copy from the original" not the "overwrite from the original". If it can help: there are no mandatory fields, there are more conditional fields.
Maybe I explained myself badly, excuse me.
What I mean to say is that any changes I make to the page after saving are deleted.
Regarding the WPML settings I have already checked and set up according to my needs,
I leave 2 screenshots to show you that the fields have already been rendered translatable (or copy once, or copy) and one for the individual types settings
Currently the translation translation plugin is keeping it off and you will find it in the list of plugins in the last positions, I do not know exactly when it stopped working because the products on the site had already created them all and translated without problems, some day later he stopped working.
I leave the backup with duplicator via wetransfer.