Sorry, that was my fault. I did not read carefully and read below at the changes list where the version number is 4.23.2. So, I changed the version number as you suggested above to a lower value. Great, it actually shows up correctly now in the WP updates 🙂 ! So, I’m really happy and looking forward to get informed about the next upcoming update. However, I’m still somehow confused, that I was stuck for over a year with the version 4.17, which was the first purchased version I installed in November 2014, without getting the update notification of any new releases. Anyway, it’s all fine now and that’s the important point 🙂 !
Thank you very much for your support and have a nice Sunday!