I really like how Riot used their weekend to work on a fix for the Store, and the problem with it. I think it shows that they care about their community, and about our happiness.
I still think maybe some accounts could be removed if they don't give any feedback on report any bug. People take advantage of PBE to buy and use the skins, not for testing or looking for bugs but just playing with them normally. This could help remove this Store bug. It could clean the heavy load.
I still appreciate Riot for trying to get a fix for the whole weekend. I hope this gets fixed soon, but take your time. Obviously, we all have our own personal lives, and have alot of stuff to do.