Hey Guys,
As a rule of thumb, all PHP scripts must be chmoded to 755 to run properly without an "Internal Server Error" with your hosting accounts.
If you have problems in the future just submit a ticket via the "Get Supoort" link in My Sevaa at
https://my.sevaa.com or you can shoot me an email (rkent@sevaa.com) as I handle most of the FIRST related accounts anyway.
I recall your issue being with you WAN IP address being blocked due to excessive FTP authentication failures. If you have more than 3 failures in a 5 minute span, the IP gets blacklisted from that server.
Kind Regards,
-Randy