I have updated this plugin today (and yesterday) but I can’t make newsletter because the editing tools aren’t displayed. The mobile version aren’t displayed also.
Hi, the mobile version is probably below the desktop version. Could you check it? About tabs that sounds like there is a javascript error, maybe due to another plugin (tested on a clean wp installation the tabs are there).
Can you contact me privately for a check? stefano @ thenewsletterplugin.com