Doesn’t work and no support

So this plugin used to have Full Query problem, I have a site that is set to post every 6 hours and ignore posts that are over the posting limit.
This was working for a while until a update broke it, after the update, all the posts that are over the posting limits get put to Query, which means if I posted 20 posts in one day, this plugin will post all 20 posts in 5 days(due to one post per 6 hours setting), and the posts that I post on the day after will get posted after 5 days.

Then a recent update broke this even more, the plugin will clear the queue if it detects there are too many posts being queued. So take the previous example where I published 20 posts per day. The plugin will auto post the first one and queue the rest, but at some point, it will clear out all the queue which resulted in auto posting only one post per day.

I contacted the support a few months back, didn’t hear anything and I have the PRO license.