Hi! Mlem v1 requires iOS 16 or later and Mlem v2 requires iOS 17 or later. Supporting a wider range of versions would take up significantly more development time, and prevent us from using newer APIs. For that reason we choose to support only the two most recent iOS versions, which most of our users fall under.
We’re sorry that you can’t use Mlem on your old iPad. You could try Voyager instead, which supports any iOS version (I think).
Hi! In the Mlem v2 beta there's a setting for this at General -> Swipe Actions. In Mlem v1 this isn't possible.