iPhone/iPad app -- upper channel limit?

I've recently added a number of sources that has pushed my total channel count to the high hundreds (or beyond). For whatever reason, the iOS apps will now no longer refresh their sources to reflect the additions. In fact, it appears to drop sources (I only get my HDHR showing up). Trying to reconnect via IP address (At Home) yields in an error.

I'm not sure what the breakoff point is, but it definitely appears to be an issue. Android/Fire TV and web work as expected...

Please submit diagnostics from the app

Submitted about an hr. ago.

Some of your M3U sources have invalid logo URLS (set to "Logo N/A") which is causing the iOS app to fail to load in your sources from the DVR.

Thanks! I'll fix it and try again.