Need Asterisks freelancer

Hello, I have a asterisk system due the hosting company I had having major issues all data was lost. So, I had someone put a old backed up version on a new server.

Now, my system when a person calls 1 number it then routes them to another.
This seems to work fine… at first
However today I added the office ATA and SIPs’… group ring

Once customers started calling the office phone the system is now continuously knocked offline.
ATA Boxes knocked off
I am having to reboot the system every 5 to 15 minutes…

Can anyone tell me where I would even begin to look. Or is there a freelancer that can tell me their fee first ? Then possibly if I can afford it look at the system.

What do you mean with the term SIPs’ and also office ATA?