Horrible!
There was a bug with their pro subscription for the 3 weeks I paid for the app (it is not possible to use pro features). Despite following their instructions, it didn't work. I submitted evidence with the date and time stamp for the bug.
I suddenly got access in the last three days (21 in total). I contacted them, but they could only offer me one week for "free" (lol, I already paid for three weeks!) — a complete scam and by far the worst support I've experienced. I'll choose better options next time. Steer clear!