Run Blender as Administrator and open the system console(Blender system console processsing can be stopped with Ctrl + C) before clicking the Generate Movie button, so you can see how it is progressing the module installation. It'll take a lot of time, since it is a huge and slow download.
If some additional python modules are missing, write about it here(so I can add them), and use the Blender PIP add-on to manually install the missing modules: https://github.com/amb/blender_pip
The downloaded models should be placen in this folder: C:\Users\Your_user_name\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\text_to_video-main\model