my messages won't connect

Try this steps-

Make sure BT is turned on both on the PC and the phone [if either wasn’t on – try pairing again after turning BT on]
[If didn’t help] Go to BT settings on the PC (search for Bluetooth setting), then locate the phone on the paired devices list.
Click the phone name.
Select Remove Device to unpair it
Go to BT settings on the phone, and locate the PC name in the paired or connected list.
Click the PC name and select Unpair.
Restart APN by restarting the Android app.
Select Pair with a PC.
Select Add New Phone from the Windows app Settings > Phones

Regards,

Rachel Gomez