Thanks for your message!
I started the application on 14 May 2020 and finally submitted on 21 May 2020. Made the payment on 21 May 2020 and then I got the confirmation of payment and to follow the next steps. My account was already there, I guess due to my previous ILR application. So When I started to look for an appointment I did not create a new account. It already recognized my old account. the next day I got the confirmation of my application from the Home Office.
Yes, I checked junk email -- nothing there.
tried to login and have no access in my mobile.
registration, I guess was done in 2018 during my ILR application.