I hear what you're saying, but no, the place is known to be very good! We got our Betta Malcolm from there as well, and we had no problems whatsoever.
The cloudy eyes appeared after being in the care of my son. I strongly suspect that there is something wonky with the conditioner they've used before. Things improved over night, after using Prime.
Hopefully he hasn't got any organ damage, and hopefully it is a case of constipation. Is it Daphnia that is supposed to help after the three days of fasting? There seem to be differences in opinion whether to use peas or not.
Seeing his belly also again makes me think of internal parasites, that's what we suspected with the first Betta....ugh, I feel like an emotional yoyo right now!