I was unable to connect the game for 2 or 3 weeks.
The game automatically promoted a member as the leader of the alliance I created.
What can I do?

@Foxy You can ask the one who is leader now for Co lead. Or , if it important to you to be the leader, you can leave that alliance and make a new one.

If memory serves in Monster Legends this happens when the leads are not active in order to keep the team going. You either need to stay active in order to retain your leadership or do as Bettina said and leave and create your own alliance. However if you plan to be inactive like you were on this team it might not be a good idea to pursue to be a lead or co-lead.

@Bettina-Löffler thank you for your answer

@Nynaevelan I was an active leader as I had connection troubles 2 or 3 weeks long.
All is back in order now.

@Foxy said in Another member was promoted leader of the alliance I created:

@Nynaevelan I was an active leader as I had connection troubles 2 or 3 weeks long.
All is back in order now.

Did the co-lead reinstate your leadership?? If so that is good, too bad there isn't a way to communicate with the team members outside of the game, especially for situations like this where members are having trouble logging in.