I am now trying to send some BTC to the wallet.dat that was created when I sat up the latest Bitcoin Core on the brand new clean MacBook Air.
Once hopefully this Bitcoin reached this account I will try to make a send.
I expect this to work fine, assuming the problem is with your old wallet.
LoyceV
I have a lot of confidence in you. Would it be possible to share the public addresses just with you privately, and not on the public forum.
Feel free to PM me. Or just check the addresses Blockchair.com instead of posting addresses.