My Forerunner 55 won't connect to my phone no matter what I try

When changing phones (yes, I removed the watch from the old phone and turned off the old phone), my Forerunner 55 does not connect with my phone. The app is able to detect my watch and initiate paring (asking android to connect with watch, asking for code, and connecting with watch) but after that, the app says, "Paring Failed". I have tried rebooting the watch and phone, factory resetting both the app and watch, and reinstalling the app. Nothing I have done has worked.