I have one installation of fresh versions: WP 5.3.2, RankMath 1.0.38 and Mailster 2.4.8.
Believe me, I tried everything before. But only if I deactivate RankMath the Visual Template Builder of Mailster was visible (again). You see documentation and screenshot at official website here: https://mailster.co/
There is a demo site, open https://demo.mailster.co/2983gf7/wp-admin/post-new.php?post_type=newsletter and you see the section “Template”. This is the problem. With activated RankMath there is only the tab / title and after this “nothing” to see.
I cannot give you any errorlog warnings of my server. There are none.
But in inspector of chrome I can see something. Please look at the screenshot: , again only the link to the screenshot: https://drive.google.com/file/d/1YeyQ-HrUDsLSGMB0BoLsMaQUK5GachIo/view?usp=sharing
I would appreciate if you can solve this problem. Together with the team of mailster, I suggest.
Did I mention this is an urgent to solve problem?
Thanks in advance.
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