About the digger: when there are about 10 or more castles, the program, instead of digging in the same castle, starts jumping to neighboring ones, where it gets stuck. That is, it's like a kind of Soviet semi-automatic.
You need to sit nearby and periodically adjust it.
Is this happening only to me, or is it happening to everyone?
If it jumps off while digging in the last castle, I set the number of the castle to be dug to +1. That is, if we have 8 captured castles and we are digging in the last, eighth one, I set the number to 9 in the Digger. It often helps, even if I don't have that number yet.:D