Good night, the following is to report a problem with the game, two tower nesters appeared but every time I want to hatch an egg I get "Error loading try again later", appeared 2 when I went up to level 2 to the tower, its help with it.

Hi and welcome to forum :)
This is a know bug for sp but you will have to send a support ticket as shown here .
https://forums.socialpointgames.com/topic/30/how-to-report-game-problems-to-support
they are alreadu working on a fix but it may take a bit