Direct Answer
Yes, you can — but not directly. You can’t update your mobile number directly within the app; instead, you need to log out and sign back in with the new number, effectively creating a new login.
Step-by-Step Instructions
Open the Sitemate Mobile App and go to the Profile tab.
Scroll down and tap Logout.
After logging out, tap Start and enter your new mobile number.
Follow the prompts to complete setup with the new number.
Notes / Considerations
This process essentially creates a new login tied to your new mobile number.
If you had access to ongoing Sitemate Links, you may need to re-enter those links after switching numbers to regain access to forms.