Hi Andy,
Thank you for your quick reply.
I uninstalled version 3.0.3 and installed 2.0.3, and this version works fine.
Some days ago, I added the Enable jQuery Migrate Helper plugin, that’s the only new thing. But Post Lockdown (v 3.0.3) isn’t working, even with Enable jQuery Migrate Helper inactive.
Can’t see any error in the developer console.