This issue may be due to other 3rd party bluetooth connections interfering with your connection to your device. On both devices, go to your devices Settings app -> tap on "Bluetooth" -> Devices -> then tap on the information icon (on the far right) of any devices you no longer use/do not know -> then tap on "Forget This Device" at the bottom of the page.
Other suggestinos include:
- Restart both devices
- On both devices: uninstill the app, restart the device, reinstall the app [NOTE: Make sure you have no videos in the "Recovered Videos" file as these will be gone once you delete the app. Additionally, all your settings will be reset]