Zwift Hub Trouble on non-Zwift Apps

I’m having trouble controlling my Hub using non-Zwift apps. I ride in ERG mode and want to control my power directly and on the fly. Whether I try to use Bluetooth on PC or from iOS, both disconnect very quickly and I’ve got to restart the app to regain control. I’m not interested in riding through Watopia in this particular instance, I just want to be able to ride and set my target watts to what I need. The Hub is billed as working with other platforms, but this is a struggle that makes me regret my purchase.