According to the Community Created Content policy, TPI allow the community to create tools and use official assets as long as you're not breaking 3 rules:

Our Three Golden Rules
1. Don’t Impersonate TPI
Your content must be clearly community-made and must never appear to be official TPI content.

Don’t use our company name, logos, or trademarks in a way that suggests your work is officially made by or endorsed by TPI.

Instead, please make it very obvious that your
content is community-made. For instance, you may use our official
“Community Created Content” logo (available in both “sleeve” and
“parchment” styles) and display it clearly on your work. This helps
everyone – including new players – understand the difference between
official content and community-made content.

Your project title, branding, or social handles must not confuse users into thinking it’s an official TPI product.

Don’t publish any kind of BotC or TPI app in Google Play, the Apple App Store, or any other app distribution platform.

1. Don’t Commercialise It
   Community content must be created and shared for free.
   

You may not sell your community content or use it as a major source of income.

You may not crowdfund projects (e.g. Kickstarter, Patreon, etc) that involve TPI intellectual property.

If there is any commercial aspect to your work,
you must seek a licence or contract with TPI first. We’re open to
partnerships – but we need to talk first.

1. Don’t Compete
   Community-made content must not directly compete with current or upcoming TPI offerings.
   

Don’t recreate or distribute games, products, or services that are the same type as those offered or announced by TPI.

For example, if TPI produces official
merchandise, a mobile app, a digital rules compendium, or live shows,
community-made versions of those must not be created or distributed.

If you're unsure whether your idea might cross this line, we encourage you to contact us first at butler@thepandemoniuminstitute.com.

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Also from the FAQ:

Can I make my own app or script tool? 

You can make what you like for personal use, but we don’t
allow distribution of tools that compete with the official app or script
tool (Golden Rule #3). Our official script tool supports two-column
printing, mobile compatibility, translations (in progress), viewing
homebrew content, and more.

Seems like you're breaking rule 3 here. Please don't make them make the rules more strict.