The last few days was a very bad for simvim server - it was very very slow,
and it even was totally down for a quite a time for some locations.
Now it is working again, after my complain to the hosting support.
But anyway, we have purchased another hosting and additional domain "simvimcockpit"
Now, if you have problems with simvim configurator, you can use this address: https://simvimcockpit.com/config.html
NOTE: for now it is only as backup for the configurator, all other pages will be added later.