Step 1: Try a "force refresh". On Windows you press "Ctrl-F5" (not just F5) in your browser.
Step 2: Try to Log out and Log In again
Step 3: Try using a "Private/Incognito" Browser window (you will have to login again).
Step 4: Clear your Cache and Cookies: https://www.refreshyourcache.com/en/home/
Ook goed, hoop ik...