air drop

I have an IPhone 12 Pro and a recently purchased an new IPad Pro to replace a 5 year old IPad Pro…..I can air drop from my IPad to my IPhone, but cannot air drop from my IPhone to my IPad. I looked to see in “find my Ipad” on my Iphone if it was locating my old Ipad, but it only sees my current Ipad. I have looked in the help on safari. I do not know enough about this, but I does not make sense to me that I can air drop from Ipad to Iphone, but not the reverse.

I have checked the contacts and all the other things Apple support suggests…….Stumped