I have these pods from Oppo for almost 5 months now and they are causing problems. Basically, after I use them for some time the audio from the left starts decreasing till I can barely hear it. But if I press it deeper into my ear or tap it hard I can hear it better for a moment. I think it could be wax and all that's got in there, and I want to know how to remove, it as going out and getting it opened for a check is too risky because of Covid-19.
Likely never recommended by the Manufacturer but I find it works:
I’ve had success with rubbing alcohol as it is a polar solvent that can really loosen up wax. I use a cue tip and make sure not to drench them. Then I immediately blow dry on very LOW heat or no heat for at most 5 seconds. Then leave them overnight to dry.