Hello there, director-isabell.
I've checked in our system and there are no similar reports about the contact support using the mobile device is not functioning well. Also, our Phone Support Team is available all day from Monday to Friday. You can use this link to reach out to us: https://help.quickbooks.intuit.com/en/contact.
You can also use this page to know more about Compare mobile app features.
Let me know if you have other questions. Take care!