Quick reset:
1. Put the earbuds into the charging case
2. Disconnect from bluetooth (be sure to "forget" the earbuds as well)
3. Take the earbuds out of the case
4. Hold both touch sensors for 7-8 seconds
5. Put them back into the charging case for a few seconds
6. Take them back out one by one
7. Connect like normal
Hard reset:
To hard reset your Aire 2's, take the earbuds out of the case and leave them sitting for 5-6 hours. Once the batteries are fully drained, put them back into the case and recharge them. This will perform a hard reset and should fix any connection issues you may be having.