Appeal time is changed from 21 days to 60 days now. I am abroad at the moment and have no problem with logging in.
Now I think it is a good idea just to log in every few days. I logged in yesterday and after finding this notification I then clicked on pensions in the main dashboard and it was a button, which allowed me to manage my claim, so I uploaded payslips for my missing stamps and explained why I did it. At least I have a proof that I gave them this information before the payment. I will call them tomorrow.
Now I think it is a good idea just to log in every few days. I logged in yesterday and after finding this notification I then clicked on pensions in the main dashboard and it was a button, which allowed me to manage my claim, so I uploaded payslips for my missing stamps and explained why I did it. At least I have a proof that I gave them this information before the payment. I will call them tomorrow.