Fenix 6x Pro buckle problem and small dust particles under the screen?

Hey guys I have now had my watch for about 4 days and I have already encountered many problems:

  1. Sony wf-1000xm3 isn't supported, I guess it's my fault to presume it should have worked, being Bluetooth an all.. ow well I solved this by selling them and buying "Bose SoundSport Free wireless headphones", ones which seem to be working good. (Yes I love the watch this much, I want to make it work!)
  2. The buckle! I had to take it off as it was making me feel sick with the amount of 'digging in', it done to my wrist. Do you guys have any recommendations for a buckle free version? I cannot find one I am comfortable buying online. I want to hear some feedback from some of you.
  3. Particles under the screen or something else? I am not sure how to get it out, I have tried hard to get my finger to the side, my cloth etc.. nothing works.