Hi again
After using the https://wordpress.org/plugins/real-time-find-and-replace plugin for a couple of days, the site starting acting strange. Product images didn´t load and I thought it was a caching problem. so I emptied the cache and refreshed, but that did not resovle the issue. Then I deaktivated the wp-rocket plugin and finally deleted it to see if that helped, but no. So I disableled every plugin except for woocommerce and started activating them one by one. It turned out that the site only worked normal when the Real Time Find And Replace plugin was deactivated. All other plugins seems to work normal (I have not installed the wp-rocket as of yet again). I have searched the Plugin support site for knowledge, but can´t find the issue there.
So we are back to the problem with text strings that aren´t translated as described in the beginning of this thread, and we could really need some support to resovle this issue as we have customers being confused when they see english text when trying to check out and it´s hurting our business
.