When is support for more credit cards coming?

The list of supported credit card companies is very short - none of the banks I have accounts with are currently supported - the home page has a link saying “I can help you pay your credit cards for good”, but won’t let me add them. Is this on the road map, or is it a low priority?

Don’t bother linking your credit cards.
I’ve tried many times to link my Tesco card but it then shows on Plum as the amount of credit I have (more than £8k) rather than the approximately £250 I owe.