So I had an issue with my buds, so I used the warranty and sent them to the repair center. when they came back, the left earbud was not on the same bluetooth as the right one. meaning that I could only use one at the time by connecting to one bluetooth, or the other.

One darbud is named (1244) and the other (A872)

I cannot reset them (the option isn't displayed on the Wearable app) and I don't know how to "fuse" them into one single bluetooth.