WHY CANT I LINK MY KOHO MASTERCARD

Hi secchance83-outl,

Welcome to Community!  QuickBooks Online enables you to connect your bank and credit card accounts, so you can automatically upload your transactions and save valuable time.  However, we are currently experiencing an issue with the connection between Koho and QuickBooks Online.  This has been escalated for further investigation by our Development Team.  Although I can't provide an ETA for resolution, you can manually upload your transactions in the interim. by following the steps provided here.  This process can be somewhat overwhelming, if you've never done a manual upload previously.  For that reason, please don't hesitate to contact us.  It would be our pleasure to work with you in real time and navigate through the process, so you're back to business as soon as possible!

Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.
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If you have any other questions or concerns, please feel free to reach back out.  We're here for you!

@secchance83-outl 

Try opening your QBO account on any private/incognito browser.

Any updates on this? Still trying to link my Koho Mastercard 

Is there a solution for this yet? Still trying to link my Koho Mastercard

Try opening your QBO account on any private/incognito browser. If the same error persists, use MT Online or one of the converter tools with a one time license (e.g csv2qbo @ $60) for the time being.
https://www.moneythumb.com/?ref=110

I tried the private browser method and was still met with error message:

"Hmm, we can’t find koho in our list of supported providers.