Problems in gk grid and user registration

I'm having several problems.

1- my "gk grid" is in trouble, appears the same photos or same comments
2- user registration is in trouble, the person registers , but can not activate the account ... when I turn on the email , it appears that the " key is invalid "


site is http://www.mocidadeviva.com.br/social/


...

Hello,

I'll try to help, but login or password to your website backend sent through the PM are incorrect.

Please check your GK Grid I widget area - source of your homepage grid. Please change GK BuddyPress "offset" options there, because now, you have on almost all widgets offset set to "3" which means that always 3rd activity is taken, please use different offsets.

Regarding the issue with the registration, I've checked it and you're right, could you give me also access to your wordpress database (via PM). I'll try to fix the problem. Or you can try to remove and install the BuddyPress plugin again.