WAN Port - Cant connect to my router (not pepwave) via the WAN interface on my Pepwave

Hello all,
Looking for some guidance regarding my setup.
LAN - 192.168.0.0/24 LAN Interface 192.168.0.5
WAN- 192.168.1.0/24 WAN Interface 192.168.1.3 via DHCP GW 192.168.1.1
Router IP (not pepwave) 192.168.1.1

I can ping the router IP, 192.168.1.1, from a host on the LAN side, 192.168.0.0, of the Pepwave
However I cant SSH or HTTP/HTTPS to the router, 192.168.1.1 (not the pepwave router)
When I do try to browse to the WAN router, 192.168.1.1, I get the Pepwave admin login.
Oh and it doesnt matter what order the WAN or 4G are, I get the same results.

Any ideas?