I have set up 21 rules successfully when I first set up quickbooks but I cannot now edit a Rule or make a new rule. the 'save' button is greyed out?

Hi iain2, 

Thanks for your post! Are all of the required fields marked with an asterisk completed?

If yes I'd be grateful if you could test if this is a caching issue by opening and signing-in through an incognito browsing window or by clearing the cache on the browser you're currently using following our guide here. 

Please get back to us below if you're continuing to have problems with this!