How can this be?

I have reports yesterday from members with the same issue! 

I can't find the issue, al the permissions are right. 

A bug I think?

There are a few things you need to check:

1. if the user is on a protected group; they can't receive reputation
2. if you exceed the number of reputation per day; this is a group setting
3. reputation could already been given (and the for some reason the LIKE THIS still remains - a JS error can make this happen)
4. It doesn't seem to be the case: take a look in members can't help themselves setting

 

I think it was number 3 Adriano because today I check and I already have liked it.