Catch Gallery Plugin Breaks Bold Photogrpahy Free Theme

TBH I've rarely come across such a 'buggy' theme but I am so deep in now I have no choice but to try and work with it. had this not been so buggy I might have paid for the full version but I am concerned that this too will be full of bugs and I will have wasted my money. I have Bold Photography (Free) installed here ... http://raysphotos.uk I only have the following plugins installed:- ACTIVATED WP/LR Sync (paid version) Essential Content Types Contact Form 7 DEACTIVATED Catch Gallery SERVER / PHP / WP stats are as follows: WP 5.3.2 PHP 7.2 PHP Memory Limit 256M Server OS Windows Server 2016 SQL Ver. 5.7.25 (which is running over 300 other WP sites on my server without issues) ISSUES ISSUE 1 Catch Gallery Breaks the Theeme - when I activate Catch Gallery and then go to edit a PAGE or FEATURED content I get the white blank page AND the Customiser only shows the green PHOTOGRAPHY BOLD button and no options. To ge the site back up I have to disable all plugins, swith themes to Twenty-Twenty - then re-enable plugins (which all work fine under 2020 except Catch Gallery which breaks Twenty Twenty too). Then once thats done I then switch themes back to Bold Photography and it works. But if I reactivate Catch Gallery again it all breaks again. ISSUE 2 Cant drag & drop widgets at all when I am on the widgets page - I have to go into accessibility mode to be able to add widgets - though I can do it from the customiser in live preview.