Hello,
This Sunday morning we've found that the site was down for a few hours. All site visitors where observing the "500 Internal Server Error" message. The reason was in an error in one of the scripts we were using. It's fixed now, and you are welcome to use the site normally.
Please accept our sincere apology for inconvenience it could cause to you, from our end we'll analyze the error and do our best to make it not happening in the future.
Best regards,
Vladonai Software Team