Hi
Like you, I gave a try in v1.3 that didn’t work and as explained by the JMIX team, the add-ons are not compatible with v1.3 (still using non-flow UI).
I am also expecting the add-ons will be migrated / a separate version for Flow UI with the release of 1.4 or soon after.
@mortoza_khan in my case 1.3 working fine with multitenancy addon.
But I have to upgrade to a new version in the future. In version 1.4 FlowUI is much better then vaadin 8 UI. Vaadin 8 is older and slower then vaadin 23.
If you want to use flowUI, my understanding is, you have to create a new project and then copy all elements but recreate the screens. But let’s see what is suggested in the user guide of FlowUI 1.4