I've been using sync since 2019 as my exclusive reddit client, and I paid the 23Eur to remove ads (and to support the dev, as I knew that lemmy was a small community, so I wanted the best possible client back in August), so you could say I've been supporting the app since day 1 (day 0 being the date of its release on the 2nd of August, 2023).
I understood the occasional hiccups, or the few times videos didn't load (Redgifs, I'm looking at you). However, lately there have been a lot of bugs, and it seems like nothing is being done about it. At this point, it is abandoned, and it would be nice to either see "I'm working on it" or "so long and thanks for all the fish", but silence is just the worst option. That way, we can suck it up and wait if improvements are going to be made, or we can move to the next best app down the list (because I definitely think this is the best app for lemmy, as it was for reddit).