Is this on Mobile or PC?
I paused the update on my phone in game because I had no wifi and didnt want to use up 660Mb of my allowance.
Because of this I noticed that many of the sounds in the game stopped working (for now) such as emotes and some sound effects.
Might be a similar issue here for you maybe?
Yep, it's mobile. Sounds work fine but for some reason shop related stuff is just dead.