Dear Niall,
thank you for your prompt reply.
The web host replied > this error page is delivered by your WordPress System. Please check your list of administrators. If there are unknown users there, your WordPress was probably hacked and the content changed. As far as can be seen, you have not installed an up-to-date version of the system, so there may be open vulnerabilities that could allow attackers to penetrate it.
How it can be fixed?
Thank you for your help.
Kind regards,
Olga
