You may want to check your phone number that you have entered in your Gnomen system in 2 places:

[A] Go the control panel > personalise > then change the number within this screen.

[B] Go the control panel > branches > press on the pencil icon to edit the branch> then change the number within this screen.

Note: You might also want to check the number within your user group in case the template is pulling through the user's mobile number.

Go to the user and groups section within the control panel > edit your user and change the number there also.