Webinterface / UI not accessible


since a few days I can’t access the Volumio2 browser interface anymore.
If I use the MPDroid App instead of the web interface, everything seems to work just fine.
I thought that restarting the Volumio might be a good idea, but when I’m trying to connect to the volumio via PuTTY there is a warning about a potential security breach (“The server’s host key does not match the one PuTTY has cached in the registry.” etc).

Since I don’t know too much about these things, the warning got me a little worried.

Has anyone experienced a similar problem?

Any help on how to solve the issue ishighly appreciated.

Many thanks