Quicken for Mac with Quicken for Windows

I have El Capitan 10.11.6.

I have been using the program 'Checkbook' for accounting.

My CPA has Quicken.

I want to give him my figures from 'Checkbook' to his 'Quicken'.

He won't do this anymore. Says I need to update.

What Quicken do I use?

Will Quicken for Mac export to Quicken for Windows?

Which Quicken should I get? It is a very simple accounting, just checkbook debits and deposits.

Thank you