I am trying to load background map from OSM and having problems. The data source browser->XYZ Tile comes 'pre loaded' with a link for standard OSM and this works fine. When I try to add a new source (right click -> new connection...) and fill out the dialogue with the Tile url from OSM the item appears in the menu but when I click on it I get a legend entry but no layer is displayed.
I have looked through the message but could not find anything relevant.
I have also tried Thunderforest links with api key but got the same result.