Recent update has problems

I had been using this plugin for about six months and really liked it’s functionality even at the free level. However, recently I have had to remove it. A recent update to the plugin has caused themes on several sites I host and manage to insert blank space in the headers, footers, and menus. The recent update of the plugin was tested on a clean install with the same themes and the default theme with the same formatting problems. The recent update also affects the admin console by disallowing views of the Add New Plugins page, and the page and post listings from the admin panel. The same sites experienced significant slow downs for logged in users. Sites using Astra theme exoerience problems for all users, sites using Neve only for logged in users, other themes experienced some variation of the problems above depending on user level. I am hoping for a fix, but am looking for an alternative plugin for now.