Enable Mate in Safari on iOS 15+

Tap on aA in Safari's address bar
Tap on Manage Extensions
Enable Mate
It will appear on the list — tap on it again to grant permissions
Don't be scared, it's the same permissions you automatically give to all the extensions on your desktop browser. Apple, however, decided it will be good to scare users away with these dialogs. We never track, collect, or sell any of your data. In fact, Mate is one of the most privacy-conscious apps on the market.
Select "Always Allow"
So Mate doesn't stop working after one day.
Select "Always Allow on Every Website"
Without these, Mate can't insert its translation scripts to pages, which are necessary for the full-page translation and Select to Translate.

Tap on aA in Safari's address bar
Tap on Manage Extensions
Enable Mate
It will appear on the list — tap on it again to grant permissions
Don't be scared, it's the same permissions you automatically give to all the extensions on your desktop browser. Apple, however, decided it will be good to scare users away with these dialogs. We never track, collect, or sell any of your data. In fact, Mate is one of the most privacy-conscious apps on the market.
Select "Always Allow"
So Mate doesn't stop working after one day.
Select "Always Allow on Every Website"
Without these, Mate can't insert its translation scripts to pages, which are necessary for the full-page translation and Select to Translate.