User fields not updating upon form submit on profile page

I’ve got a profile page containing tml fields as well as pmpro and advanced custom fields. I can update the other plugin’s fields fine however nothing happens when I change a tml field.

I have added a theme-my-login-custom.php file to the plugins root to remove some unnecessary form fields (one of which is the ‘pass2’ field). I have also made a change to the ‘tml_profiles_action_handler’ function in the functions.php file in the tml-profiles directory to push the user to a specific page upon submitting the form.

I initially thought it could be due to the password fields not being validated but having added the pass2 field back to the form it still doesn’t work.

Any ideas what this might be?