Problem with Greek characters

[desite]

Hello everyone,

 

I have a juge problem using greek characters in various spots of whmcs, such as product bundles and client contacts!!

 

I've contacted support department, they suggested me some solutions, some parts of the problem have been fixed, but others are still there..

 

Unfortunatelly my ticket is in "customer replied" status for many days now, so I'd be glad if anyone can help, cause I've already paid 3 months of subscription, but "im unable to use the product the way I wanted to..

 

Thanks in advance!!