Jotform Trello integration Authorisation

Hi, 

I'm having trouble authorising my jotform account within Trello. 

When I click on authorise, a pop appears and then disappears because allowing 
me to insert my login details. 

Any help would be greatly appreciated. 

I tested this issue, but I wasn't able to replicate:

And I was able to integrate it.

Are you still able to replicate this problem?

Could you please try accessing it from a different browser and see if the issue persists?

We'll wait for your response.

Thank you!