Hello!
I don't know what is wrong with my forum, but after the topic reached 67 sites it automatically splited. Every know post arrived in a new topic under the same name. I tried to merge them again but it's not working. Just a link of the new topic arrived in the last post of the old topic.
What can I do with it?

Hi, this happens automatically and is not a problem. It means that the topic has hit the limit set by Forumotion and the topic splits in order to allow more posts. No limits can be changed. For more information about limits, see this topic: https://help.forumotion.com/t1709-some-limits-of-forumotion-forum

Thanks, it clarified a lot!