Hi Pete,
Thanks very much for correcting me - this of course is very good news, worth to give Blynk a try. You made my day …!
In general - the configurable GUI is the most valuabale part for me (at the beginning) - with regard to connectivity / protocols I can help myself using a bridge or gateway or somethng else in between. Nevertheless, using modern technics like NodeRed, MQTT etc. would be the final goal to implement, socket programming is a bit old fashioned and stiff.
I will start immediately in the next days and download the server, playing around a little bit for first experiences!
Thanks & Best Regards