If you have problems pairing your Android phone with your Stryd, make sure that Stryd has permission to access the phone's Location Services and Storage.
Each Android phone is a bit different, but for Samsung, these settings can be found:
Settings -> Apps -> Stryd -> Permissions
Enable both access to Location and Storage. Only when both are enabled, will your phone be able to pair with Stryd.
If you need additional assistance, contact firstname.lastname@example.org