Watchguard low end router firewall issues - I don't know what I am doing. Can we set up remote session?

I inherited a network with 2 watchguard boxes - 1 at main office(xtm21?) , 1 at remote site (X10e).  There's a VPN between them.  Things were good for a while, but now I am backing up 3 PCs using shadow protect continuous incrementals from the remote office to the home office.  Not sure if that's the issue, but the remote office WIRED devices get DHCP from the local watchguard.  But can't ping the router, can't get on the web, can't do anything.  Wireless devices (via a Ubiquiti Picostation) can get DHCP from the watchguard, and get on the web, ping the watchguard, etc..  The wired and wireless access point are all going through an unmanaged netgear switch into 1 port on the watchguard.

is there some setting in watchguard that says that mac address of that device used too much data and will only get an IP address?

Is there a place in watchguard UI to show that someone was cut off for using too much data?

Can I hire people through EE to help with this or for points, can we set up a remote session for you to see the UI / tell me / show me what needs to be done?

I will likely reboot this firewall and restore the wired devices.... but the problem will likely return when they start trying to send bvackup data.

and again, the problem isn't just with the vpn, it's with general web access from the wired devices (which are being backed up... so is it a wired issue or a too much data issue).  wired and wireless are all going into the same single port on the watchguard, so it's not 1 port is locked / 1 is unlocked...

Watchguard support sucks as far as I am concerned! faster / better answers from other users!