Reactivation Troubleshooting

New computers with 365. According to Calendly they no longer have permissions, so they temporarily deactivated our Calendly page. I’ve run through all the protocols and it’s still now working. I am on my third support email to get help setting this back up with no responses. I need help since I can’t get it from the company’s support staff. Chat does work & I’ve tried all the suggestions there as well.