QB Issue Resolution:

Don’t know what else in fees you are paying but manual entered card transaction fees (card not present) through MOST providers including Square is right around 3.5% plus a small per transaction fee os 15-35 cents. Square also does not charge any monthly fees.  If you ran $2200 through Square, for example, your total in fees would have been around $80-$85 tops depending on how many transactions (3.5% of 2200 is 77)

Resolution for Issue 'Intuit credit card fees through Sekure Merchant Solutions' available: Yes (Solved).
Source: Intuit Community forum.

Intuit credit card fees through Sekure Merchant Solutions: 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 card transaction
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Error Recovery for card transaction [Canada]
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