Same issue - Apple devices 'forget' the password on Boosts... Interestingly, not all at once. You can move to another corner of the house (where another Boost is working) and connect fine.
So the workaround I have right now:
It's far from perfect, and numerous tech visits didn't help - they seem really resistant to replacing the T3200M. Each time they come by, they reset it, and "prove" to me that its behaving fine. Whatevs.
What type of devices are you seeing this on? (type of phone, computer, Mac, etc)
There is already a running discussion for this >>> https://forum.telus.com/t5/Internet-Home-Phone/Telus-Boost-Network-Connection-Dropping-on-iPhone-XR-...
omg, literally the same issue for only one of the devices (mackbook pro) at home. wifi connection just keeps dropping only for this specific laptop. There doesnt seem to be any clear cut solution here tho 😥