Something strange that I just noticed:
Starting with the 15th of May I have not had one single view from the activity feed. . . no matter how high or low my views have been and no matter how many hearts I received either for my shop or for my items. And while I am not in a ton of circles, I am still in over 475. Up until May 15th I have always received multiple views from the activity feed. Either they are not counting those views or they are recording them differently in shop stats.
Not sure if this may be part of the problem or if anyone else has this anomaly.