evamaria
I'm sorry but i cannot understand what you mean exactly, i suggested a way to update requested extensions, we cannot debug your website since i don't know what you have done on your website first to update extensions, you should also update all other installed extensions, if they are all compatible with latest joomla and php version installed on your server.
I noted some errors on your back end, also try to switch your php version to 7.1 or 7.2 you have now 7.3 release installed.
http://prntscr.com/ohd8rg
http://prntscr.com/ohd8jg
Hope it helps.