There are so so many threads and conspiracy theories all over the sellers boards and you may choose to believe them or not but I have been with Ebay for years and Managed payments (MP) has nothing to do with the slow sales, I know this as I changed over when it was first announced, no point delaying these things in my experience, so I signed up right at the start and it never effected my sale they were still strong. My sales nose dived since May, as did many sellers, but remember this is when shops started reopening, pubs, sunshine, Euros, Olympics etc etc so if you only changed over to MP recently you will understandably make that connection. Also I have a website and Etsy and they are also quiet so if all the conspiracy theories were right they wouldnt be suffering either. Ppl are just getting back to normal and shopping locally etc.
What I will suggest is look at your listings, its catch 22 if your listings arent creating interest they will start to drop down the rankings and drop off the best match searches so revamp titles, images and descriptions, its not always about price as you know. As you say you contacted ebay and it went up again, they may have refreshed your listings as Ive called them in past years thinking that something was wrong, but I also get ups and down days sometimes I think "blimey someones switched me back on" and then next day hardly anything but what I do know from over 15yrs on Ebay is things will get better once schools are back and dark nights draw in so stick in there.
