Authentication error

I have a problem during get authentication from my app by using free agent dll.
Did you made any changes on the web api or dll files, So that be able to make my app run again.
Note: when I am trying to log from your page its working good, but not from my web p

Hi Abdallah,

We did make some changes to the API authorization process to improve security for our users. This was announced back in December here Forthcoming API OAuth Restriction change

If you check the instructions on that post you should be able to get your integration working again.

Kind Regards,