QB Issue Resolution:

Buy the 2019 version on Amazon. Currently $149. You don’t want the 2016 version as it will loose online functionality soon while the 2019 version has three more years.

Resolution for Issue 'How do I purchase quickbooks for mac 2016 desktop version? I m currently using a trial version.' available: Yes (Solved).
Source: Intuit Community forum.

How do I purchase quickbooks for mac 2016 desktop version? I m currently using a trial version.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for desktop version
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Error Recovery for desktop version [Canada]
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