vendor gone missing again

Hi everyone,

I’m reaching out to see if anyone else has experienced vendor or user accounts disappearing while using MarketKing Pro.

For context: my site (nanasquest.com.au) has now gone through multiple data losses tied to MarketKing Pro, confirmed by WordPress fatal error logs (Class "YahnisElstsPluginUpdateCheckerMKv5PucFactory" not found).
Our host has been rolling the site back each time to recover data, but this seems to be a recurring corruption issue rather than a one-time fault.

Has anyone else had vendors or users vanish after updates or fatal errors?
I’m trying to determine if this is isolated to my setup or something others have encountered.

Thanks for sharing your experiences — even one similar report would really help build a clearer picture.