building site-site vpn using sonicwall

across Tasman, site-site vpns worked for some time.

now there is a new TZ 200 in the main office, I need to rebuild the site-site link.

connection to Sydney works using the manually key.

But I got a big problem with Brisbane site. payload error, cookie broken, auth error etc. eventually I lowered the encription strength, then boom... VPN tunnell is up and running, ping is 66ms... bot that bad ...