Hello OP, I am here again confirming that the logging issue is no more to me now, I can also access the offers. I tried just now from Offertoro, I used web version so it asked my e-mail address where the link will be sent. So I get my smartphone and open the link from my mail, downloaded and installed the app. Opened the app and watched videos but I don't see any completed offers on my dashboard. Did I missed anything? Thanks.
Ok great glad to hear that. Did you watch the required number of videos? Some you have to watch 3 videos, some 9 etc. After you watch the required amount, you should hear a "cha-ching" sound at which time your account should be credited.
If you switched from computer to mobile, I would recommend logging out of your GPT Bitcoin on your laptop, and logging back in with your phone. Then start completing the offers on your mobile device.
You can complete offers using your desktop/laptop/tablet or mobile phone and there will be different offers displayed for mobile or computer. Just be sure to logout of whichever one you are not using and log in on the device you are completing offers on.
I hope that makes sense and if not please let me know and I will be glad to help. Thanks!
... if my wife finds out about it, idk how i'm gonna explain it;). 
