Is there a problem with Handelsbanken connections at the moment?

Our clients bank connection with Handelsbanken has expired and needs reconnecting, they tried to connect it on Thursday and Friday last week and it would not work with a message stating that something unexprected has happened and we should try again in a few hours.

They have just tried to do it with us at our offices and it failed again. I will post a screen shot of the error message.

Is this a known issue? Is there anything else we can do to try to resolve this?

Thank you in advance.