I recently flashed my Volla 22 (shipped with Ubuntu Touch) with Volla OS, and had to update it from Volla OS version 11 to version 12.1 and I had the same experience.
What you see is the Volla home/Springboard trying to load itself. But because of some updates, I think it cannot load past data anymore or something, so it keeps crashing and loading itself.
Here's what you have to do to fix this. You may still get redirected to Volla home while you're in the process of doing this:
- Open the top panel by sliding from the top to bottom.
- Press on the
gear icon to open your Settings.
- Then go to Apps > Default apps.
- From there, you can choose which home to use. If you switch from Volla to Trebuchet, this will switch from Volla Springboard to a more classical Android home, which will give you a moment of respite.
- Now, to fix the Springboard itself, press on the < Back arrow button to come back to the Apps menu.
- From there, press on the button to display all the installed apps.
- Scroll down until you see "Volla".
- Press on it, then press the button to clear the cache.
Done.