Mulitple Connectivity Issues - not range related

I put a smartthings in a small cabin ~800 sqft and I am having a series of connectivity issues where some devices namely 2 schlage locks and one Aeon smart plug can be included but then lose connecivity after a time (several hours). I can then exclude them and reinclude them and they work again for a short time… I have tried a bunch of things:
+General Exclusion
+Normal Exclusion
+Factory Reset of the locks

The devices are about 30 feet from the hub with closer repeaters so I cannot imagine an issue with the devices. I am starting to suspect a bad hub… any advice?