NextGEN Gallery 2.1.23 Causes White Screen

I am getting a white screen, when I disable all plugins but NextGEN Gallery all works fine. I tried deactivating, removing and re-installing the plugin, what worked fine for a few minutes and the white screen appeared again. Changing the theme also works; for a few minutes only and then the white re-appears.

I did not find a solution at the resolved ticket:
https://www.ads-software.com/support/topic/nextgen-gallery-217-causes-white-screen

Site: https://zsmsmrakotin.cz/
My WP is up to date: 4.4.2
Theme: Twenty Thirteen
Plugins:
– Contact Form 7 4.3.1
– Download Monitor 1.9.1
– NextGEN Gallery by Photocrati 2.1.23
Hosting: https://www.hosting90.cz/

Thank you very much.
https://www.ads-software.com/plugins/nextgen-gallery/