INFO (12.10.2020) : OE SMS Spotter (and also the Italian one operated by Marco IZ3GME ) was out of service since 8th of October due to the updates made to the SSO Server
Thanks Andy @MM0FMF for finding the problem and prompt fix.
Also my webpage can be access per https since last week. System back in operation 
Sorry for the missed spots and error reports sent e.g. by Michael @DC8YZ