QB Issue Resolution:

If you are a QBO pro advisor then there is no software to buy

if you bought the pro advisor badge for desktop (there is no test) then if you expect to work with clients, you should have the version of QBDT that your clients have, premier (premier works on pro) or enterprise.

Resolution for Issue 'I am a pro advisor. Do I need to buy quick books software?' available: Yes (Solved).
Source: Intuit Community forum.

I am a pro advisor. Do I need to buy quick books software?: 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.

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