Opening another ticket on the related topic: when trying to load a template, loading time is ridiculously slow, sometimes doesn’t even load at all.
When it does load, changes are not saved (visible in editor, not in live page, i.e. custom tab: “materiaal & verzorging (boho kink)”. Save buttons works but no results. Hitting the Publish buttons results in error message (“Something seem to have gone wrong. Please wait a few seconds and try again”)
Login credentials in related ticket