Is Monero 14.0 still operable on Macbook Pro? I can't sign in. I have OS 10.10.5. Is there an update that is compatible with my system?
I assume you mean 0.14.0.x. If so, it will continue syncing part of the chain only. To sync the entirety of the chain, you need at least 0.16.x.y, but 0.17.x.y is strongly recommended, since in about a month (mid october 2020), 0.16.x.y will stop syncing too.
The 0.17.x.y daemon is available on getmonero.org as binaries for Mac if needed.