The update message appears when the version you have installed is out of date. The message leads to the integrated updater which will download and install the update for the correct edition (Pro or Core) you have already installed. This message appears in a yellow background.
If you have the Pro version and you haven't already entered the Download ID there's another message with a link to our site where you can find the Download ID. It asks you to copy that into the big box in the message appearing on your site and click the button next to it to apply it. This message appears with a green background.
There is the possibility that you have had the CORE version and upgraded it to PRO but both editions were on an outdated release. In this case and for approximately 10 hours the cached update information on your site does, indeed, lead to the CORE version. This can be fixed very easily by clicking the Refresh update information button in the updater page. Or you can wait for half a day and then the updater will see the correct update (the cache expires). The cache is also cleared automatically when you enter your Download ID in that message with the green background.
There is nothing you or us have to do about any of that. When you have entered the Download ID as instructed all your clients have to do is click on the big update button to update to the newest Professional version. This message will not be removed because we simply don't support old versions of our software. If we remove that message our clients will be running old versions and we won't be able to help them (since there's no point wasting time, for example, on rediscovering a bug we fixed six months ago and which isn't of course present in the newest version of our software).
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!