Yeah, normally post in here and in the main Dominions 5 thread that you are looking for a sub with some brief details like Era/Nation/Game and maybe your position, but being it is early for this game, the details of your standing/position in the game isn’t so necessary for this one. If you can hold out one more turn to give folks a couple days to consider taking over, that would be really helpful.
EDIT: I shouldn’t say details on your position, but perhaps just a general idea on whether you are in the lower, middle, or upper end in strength, if you know. Once a person is found, normally the transfer of nation goes along with some details on what you were trying to do and any NAPs and trades/agreements you have made.
If we find a replacement, I think the Admin just has to change the email address at Llamaserver?
I would also fill in, but I am already in this game with you.
I should probably add that the main reason for subs is that once a person goes AI, it normally gives the bordering nations a huge advantage where they are able to quickly gobble up the AI territory and can skew the game balance.