Hi! I wrote to the seller in the official 3Eaudio store. The seller sent a "recommendation from engineers" - to replace 2 capacitors. (look pics.1)
Before replacing these capacitors, I checked them on both boards. (look pics.2,3)
All 4 capacitors are serviceable. They have a capacity of 9.10mF - 9.90mF. It doesn't make sense to change them.