QB Issue Resolution:

I fixed it this way. When you try to connect your capital account do not choose “Capital One” but search and choose from the search the one that reads “Capital One Visa Business Platinium Card by Capital One- Credit Cards”. It’s working for me. I have Spark Business Credit Card.

Resolution for Issue 'I’m not able to connect my Capital One credit card on QuickBooks. I’m receiving an error to try agin later for few days. The error code is 590. How to fix it?' available: Yes (Solved).
Source: Intuit Community forum.

I’m not able to connect my Capital One credit card on QuickBooks. I’m receiving an error to try agin later for few days. The error code is 590. How to fix it?: 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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