The product seemed good, and they promised a lot. They had a Discord group and were fairly active so I thought it was a winner.
They had issues with reliability and then there were rumours of financial issues. Appsumo to their credit alerted users to the issue and offered a limited time refund - only 50% for me unfortunately as I was not a plus member but 50% is better than 0%.
Now I see they very sneakily announced a degraded product for the lifetime customers right at the end of the Appsumno refund notice.
I would never trust these guys again. This and a few other recent deals have made me more wary of purchasing LTDs/