Help app could not be downloaded due to an error [RPC:S-5:AEC-0]

[freagul]

I have been trying to update a specific app recently and I'm getting this error.:

"thinkorswim Mobile" could not be downloaded due to an error. (Error retrieving information from server. [RPC:S-5:AEC-0])

I've tried googling it and other people seem to have this error. The recommended solution I've found is to remove my google account in settings and then re-add it, or clear the Play Store cache. Neither work for me. It seems like other people who have this error have it for all apps they try to download, but I can download other apps just fine. I'm only having problems with "Thinkorswim Mobile" (it's a brokerage trading app). Does anyone have any idea what the problem is?

 

[Mikestony]

Perhaps delete the app and reinstall it? Or clear the cache and data for the app, then try to update it again?
The app in the Play Store doesn't look like it's getting very good reviews...

 

[freagul]

Yeah I tried uninstalling the app just now and now I can't even download it again, much less update it. And yes, it's a pretty terrible app, but unfortunately it's a necessary one.

 

[Mikestony]

I just tried to download it and I got an error "oops, we are having trouble with this request"
So, it's just not you