Title says.
i can summon my buddy to help me clear a boss. but he cannot summon me.
it only works for me when we reboot the game and he puts his sign down and i load in after its down.

We are the exact soul memory,
we use the co-op ring
we set matchmaking to restricted
we live in the same town
we never used hacks / got banned
Both have the same fiber internet company.

Any ideas as its getting annoying it worked the entire game and suddenly it stopped when we got to vendricks castle