My Rumble quit working on Roku as well probably as it is not in line with Roku politics? I wanted to watch the Vance/Walls debate on Rumble and couldn't had to watch it on stupid new channel or on phone with Rumble app ☹️ was very disappointed with Roku have used them forever.
Roku does not control performance of apps that it has approved for use in their channel store. Anything else is just conspiracy thinking. Rumble is approved to be in the channel store, so it's authorized for use. If the app doesn't work, you need to contact Rumble, as Roku has zero control over the functionality of 3rd party apps.
I looked at Rumble's web page, and they don't seem to provide any way to contact them. Perhaps it's because I don't have a user account there, but if someone does have one please go to their web site and find a contact link for posting here. I did just find one contact email address: support@rumble.com
Not conspiracy thinking just real honest thinking my app worked fine no errors now it doesn't so how is that conspiracy thinking not a question just a statement, your reply totally answered my questions for sure!
Roku is in the process of rolling out a new operating system version. If the app provider did not make any changes needed by that new OS version (assuming changes were even necessary), that could break the app's functionality. But that's something only Rumble can fix. Roku does not have access to the app coding and has no responsibility to fix problems with 3rd party apps.
Rumble is working fine on my Roku devices. (use it daily and am using it now since I have the day off). Currently viewing on an Ultra 4660 with Roku OS14.0
The latest Rumble version is 9.20, build 94. Try performing a System Update under Settings/System/Software Update on your Roku and see if maybe a channel/app update was available. (they did release an update recently as I had to sign-in again on one of my devices since it lost my subscriptions/followings. Some of their updates tend to do that but signing in again and linking the device to the Rumble account re-establishes them).
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If the Software update does not work, try the Remove, Restart, Reinstall procedure. (Remove Rumble, perform a System Restart on the Roku device, and then Reinstall Rumble).
If the above does not work, then try going into the Rumble channel/app and selecting "Logout". Then perform the Remove, Restart, Reinstall procedure. You will have to login again using your Rumble credentials and then link device back to Rumble account. (I have had to re-link occasionally when a Rumble update loses my subscriptions/followings on some of my devices).