Right Airbud not connecting

My airbuds were working fine for several months with my iPhone 7 but now the right airbud does not connect. The left one is still working fine. And now when I open the charging case, my phone no longer displays the pop up window with the battery life of the buds and case.

I have tried having my phone "Forget this device" and reconnected the airbuds,

I have restarted my phone,

I have Reset my Network Connections

I have tried holding the button on the back of the airbud charing case for a VERY long time

Anything else I should try?

Thanks,

Joe