Only a couple of small things I would’ve done extra ..
Your tiler didn’t seem to sand the floor with a square buff sander ( hire shop )to take off the residue (scum) that tends to happen on curing with a lot of liquid screeds with UFH or after vacuuming I would have washed it with clean water to remove any dust the vacuum didn’t get , allowed to dry and then prime ...
Turn that heat on gently and ..
Hopefully you don’t have any problems with it
Your tiler didn’t seem to sand the floor with a square buff sander ( hire shop )to take off the residue (scum) that tends to happen on curing with a lot of liquid screeds with UFH or after vacuuming I would have washed it with clean water to remove any dust the vacuum didn’t get , allowed to dry and then prime ...
Turn that heat on gently and ..
Hopefully you don’t have any problems with it