It's not rocket science. You link to the mobile before you have problems. 
Much like backing up your PC before the hard disk crashes. Or making a duplicate of your house key before you lose it.
As has been the subject of discussion for a while in the thread.
It is of no use to the OP, and everyone else here knows what the OP should have done. Give google a phone number.
Quite apart from the fact that if the OP had set up two gmail addresses and linked to them in the way you say, it is reasonable to assume both addresses would have had the same problem.
Please stop stalking me and coming up with fatuous replies.
My broadband basic info/help site -
www.robertos.me.uk. Domains, site and mail hosting -
Tsohost.
Connection - Three 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up.
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"Democracy means simply the bludgeoning of the people by the people for the people." Oscar Wilde
Edited by RobertoS (Thu 06-Feb-20 17:22:49)