I'm trying to view my paycheck online and every time I sign in it says "unable to display. refreshing often fixes this issue" but refreshing doesnt fix it.

Your paycheck? This is a site for tax returns prepared using TurboTax software. What are you trying to do?

https://workforce.intuit.com/app/payroll-employee-portal-ui/ius/sign-in 

couldnt find a support page on there. only a sales number....

Sorry--if you are an Intuit employee, this is not the site for you to check on your earnings.  You are not the first Intuit employee lately to stumble into this site, so not sure what is going on with the links they are giving you.  Better check with your Human Resources Dept. to see what the correct site is for you.