Plugin conflict – Custom Sidebars Pro & Ocean Extra (OceanWP)

I'm running the OceanWP theme which requires the Ocean Extra plugin. However, this plugin conflicts with Custom Sidebars Pro. It runs but if I want to do any setup I need to deactivate Ocean Extra, make changes, and then reactivate. Otherwise I just get a spinning wheel when trying to edit anything or add a sidebar.

No idea what's involved in fixing that – is there any chance?