No success message after form submission

[RuthEd]

Modx 3.1

I have tried Fetchit 3.2.1 using the tpl.FetchIt.example and the fetchit call in the documentation.

I leave a field empty and the error message comes up as expected under the field, but
[[+fi.validation_error:is=1:then=<div role="alert">[[+fi.validation_error_message]]</div>]]
doesn't appear (The back ticks seems to have disappeared in the formatting, but they were there!)

When all forms are filled in, the form is submitted and the form is reset, but
[[+fi.success:is=1:then=<div role="alert">[[+fi.successMessage]]</div>]]
doesn't appear.

I cannot use this without the success message showing up when the form is submitted - I did see the similar issue from 3 years ago, but would have no idea where to add the line in this version.

Thanks for any help.