In very simple terms, Data Studio isn’t cool with adding up things like clicks straight in the platform, especially if you’re trying to get a sum of the event values for each page URL. Instead, create a calculated field in Google Analytics for click ‘value’ and then use that as your metric in Data Studio. This way, the summing up is done by Google Analytics, not Data Studio. It’s like asking your sister to do your chores instead of your brother because your brother has his hands full already!