Hi johnnybar ,
Are your contact buttons perhaps using separate groups per language?
If so, it's possible to do this by making the group only show on the corresponding language.
Then add a new page rule to the sub button, which is the contact button, to make it hide on the contact page.
Here's an video example on making an English Button only show on English pages and also hide when in the contact page.
English page only contact button
Please let me know if this was easy to follow! 😁