Hi there @Merybaik
Thank you so much for your post and welcome to the forums, it's great to have you here.
I'm so sorry that you have faced this issue when trying to sign up for a new deal!
I'd be happy to look into this with you via a PM. I'll pop one across now.
Please keep an eye out for the purple envelope in the top right corner of your screen alerting you to a new message.