Hi,
Sorry to jump in but can this forum not remove all stickys and references to myroundcube and its plugins and even post a sticky note roundcube has nothing to do with myroundcube as its getting confusing for some people and it is totally defunct (as in kaput) now.
Including their website which is unsecure (expired cert) spammed and not maintned. Would be maybe nice just for reference to warn everyone ands make it clear the projects is defunct.
Jus so everybody knows myroundcube plugins are from the myroundcube project and its completely defunct (dev ran away according to website owner as they saw no longer a future, somewhere mentioned in their forum).
Regards,