Perhaps you didn't understand what I meant.
The only Tag you (or someone else) put at the top of your post was 'Bern'. This means that if someone is searching Tags, looking for gymnastics for their child without specifiying Bern, this post will not come up.
Searching Posts and Threads would find it of course, but it might also bring many other posts, where gymnastics for children was not the main theme, and where there were no useful links. If you really cannot work out how to add Tags to your Thread, perhaps you could ask the Moderator to do it for you.