do you think those bonuses/free spins is more than enough to attract players on your site? why not try sig campaign in the forum? i noticed that not many users here are posting on your thread.
The signature could be a good idea at this point of time considering the lockdown still exists many places or normal routine has not begun and in this space to acquire the more users it is Benfica to reach to many people at different places and signature could just be one of them an easy spot to grab.