Hi Arman,
Hit a wall on my half: the Play listing asks me to BUY Daynote - it is not showing as free, even after joining the group and opting in. You wrote it is 100% free for testers, so something on the track is not set up the way you think: either the app price itself is set as paid (testers still pay in that case), or licence testing is not configured. Worth checking in Play Console - this is silently blocking every tester you recruit.
I do not buy apps as part of swaps, but the moment it shows as free it goes on the device same day, and Eaisto Max stays tested by you either way - your half is already appreciated.
Bulat