I have the Galaxy Watch and don't seem to have any troubles. It does require quite specific placement on the back of the S10 (I could do with a little X that marks the spot).
Why is it that the clasps cause this problem? I thought the Gear Sport was quite similar to the Gear S3/Galaxy Watch. Can you share picture?
Yeh am having a problems with my Samsung gear 2 sport watch too. I've taken of the bands and placed on phone, it starts to charge then within 10 second it beeps and stops charging.. I still have my S9+and that charged of the s10+ fine and it works fine.. Any help would be good as it annoying me now. Like the watch don't want to be buying another one