4k stogram 2.6.2.1467 error

when using 4k stogram 2.6.2.1467 the app is kind of stuck in downloading.
also when i click on pause all subscriptions it force close with error .
another thing is I noticed that the app doesn't check for connection after it start downloading because many times i lost wifi connection for hours yet the app kept working and trying to download over and over..
another idea is that the app try to download all the accounts at the same time which cause lots of cpu work and network load maybe trying to limit the active downloads will help or when the app is loaded make it manual to start downloading the desired accounts instead of just downloading all at the same time

another error i noticed in the log that is showing many times
500 (Internal server error)
20171123_06-51-18UTC (45fc) [2] [ParseSubscriptionAsyncBase]: error. Message: Internal server error

thanks