We use TINK to gather secure digital Bank data for our credit evaluation. The platform connects lenders to consumers' Bank data to make real-time assessments based on consumers' financial behavior. TINK is an ISO 27001-certified company, and all customer data is encrypted in transit and at rest. It is a highly secure platform for exchanging Bank data.
If the TINK connection fails - try to connect using another webpage/unit/clear cookies or even trying to connect later throughout the day (not during busiest hours).
There may also be an error occurring from your Bank, see status here: https://tinksweden.statuspage.io/
If TINK still does not work, it is possible to upload required documents manually instead.