I get that you want to be positive and whatnot and that's fine, but Sync has never been Laurence's fulltime job and it was never intended to be. LJ has a very successful family business which is his priority.
Now I can't talk about what issues he has or hasn't received. But I do know that plenty of people paid to support LJ and Sync and he disappeared on us. This isn't the same as Sync for Reddit where it was a negligible one and done payment, this was a subscription and for some a lifetime license that was paid in good faith and he bailed on everyone just as breaking changes got made to the platform. If you're going to go the subscription route, it's a two way street and the developer has to commit to it too. I'm not even talking about a constant stream of releases, at least keep your customers abreast of what's happening. One year without updates and an app that barely works. it's unacceptable by every metric.
I say all that and it sounds angry and disappointed, but ultimately I just hope he's happy and healthy. If he does ever come back, I hope he can commit to his customers the same way they commit to him.