Ugh.. Manga Rock is dying fully in early March apparently. :*( At least we got some more time out of it after they initially took it off the App Store. Apparently if you paid for Premium before they'll have a "special offer" in their new app. With that in mind, if anyone has some suggestions for an app that lets you read titles that aren't a part of Manga Plus or Crunchyroll's Manga app (which I also use), feel free to share them. I know there are a lot of apps on the store but would be interested to hear personal recommendations.
If you're on Andorid, Tachiyomi is great.