I check Pandora Box almost everyday to check new apps and what's on sale. But, recently, it's been very clunky more often than usual. I am not sure if it's just me or if it's the app itself.
I've had issues with it too so I bought AppSniper. Really, for 99 cents it's worth it IMO. I find the UI much better (quicker / nicer looking). I still have Pandora Box installed but very rarely use it anymore.
Definitely not just you. It's been giving me a lot of problems lately too and I've seen other posts from people having similar issues. I'm about ready to bail on the thing.