Unable to connect to Facebook

All that keeps coming up is as follows...

The operation couldn't be completed.
(Com.facebook.sdk error 2.)

If you can fix this please do I'd really like to connect.
Also my friend tried to input my invite code 9FEE and didn't work can you tell me why?

Thank you

Is anyone gonna try and help me with this I've even sent a message to support and got nothing. I've even contacted haypi through email and got nothing....I want help with this I've put a lot of money into this game and would appreciate awnsers .

Omg it takes soooo long just to get ahold of anyone...says support but I've got nothing of the sort....

[support7]

Dear Odynsan,

First we would like to thank you for your support.

Second, with regard to the inviting issue with facebook, we tested and found it's working well.We suppose it's possibly caused by: 1. the internet connectivity in your place 2. something in facebook.
Our suggestions is please make sure your internet is connected well.

Third, with regard to the inviting code, if you are playing haypi monster: the lost tower for venide, and your friend downloaded haypi monster: the lost tower. he will be unable to enter your inviting code. Our suggestion is please make sure you're playing same app in game.
thank you

Best Regards,
Vicky
Haypi Team

I've tried to connect to Facebook again and it continues to do the same thing as for my friend code I don't care for too much just please fix the Facebook issue. I have fiber optic Internet I know that's not the case. But I appreciate someone trying to help with this issue thank you

[support10]

Hello,
We are sorry to hear this news.We will continue to look at the situation. If we have better suggestion,we will provid it to you as soon as possible.

Thank you

Here's my update my invite code worked but facebook still doesn't I appreciate the help keep up the good work and thank you

Any updates yet?

[support10]

Hi， we're sorry that currently we cannot offer you any better ideas about how to solve this issue.We will continue looking into this and will let you know as soon as possible once there is any update.Thank you for your support.
Best Regards
Teresa