why am i getting rummy circle otp

I am eligible for free noise earbuds so i installed rummy circle app and completed all tasks in this free noise Earbuds campaign , but still

'I am getting this error frequently in Yono app please fix it.SB001 Technical Error, please try later while logging in. SBI yono.

If I navigate to YT, I'm automatically signed in. So, why am I getting this error message? I literally tried watching two clips, one after the