Can’t offer help without important details like where you are currently living and who hired the construction crew? Is that under construction building owned by your landlord? Is it some public funded projects? Are you living in Europe or Asia?
The fee is just to “challenge” the gym master for your badge. You still have to pay the subscription to even get into the door.
The earth nation exists with a whole theme about being the great stagnant central state empire getting overshadowed by an upstart nation going through industrial revolution first doesn’t give you any hints? Not even the queues and qibao?
Sorry if you already move on from this. I don’t know much about Nicaragua to say if you will have any luck with trying to ask the local government for help. However, I lived in a third world country before where if you escalate to the local government, all they do is shrug their shoulder and ask you to move on. Unless you are rich and powerful enough, which would negate all of these problem from even happening from the beginning, to have somebody in the “local government” to help then that road is typically a dead end.
Other stuff you can try is directly appealing to the working crews. Just a little bit of food and some greetings would sometimes give you a lot of information regarding who they are, who they are working for and what they are doing. If you know who they are working for, you can then go and appeal to them, which might solve your issue (or make it worse), but try to asset before reaching out just in-case. Knowing the crew might also reduce the annoyance since people tend to be more considerate around people they know. However, it might not help much if the crew is also under pressure and constraint from their contracts and workload.