Yup, as Hydro notes, Aqara can be a PITA to keep on your mesh. I tried them a few years back and gave up, tried again a year or more ago and now they are solid for me.
I'd recommend Third Reality as one vendor that has solid, inexpensive stuff that works well, and I've been trying out a Tuya contact sensor that is close to the Aqara contact size/form factor and it has been very solid.
