Come on man, what kind of business are you running here? At least be honest that you're offering a paid product. Clearly use of the AE plugin is NOT free if you have to upload your files - which are capped at 10 items on the free tier - to download the LottieFile. The claim that the plugin lets you export your animations as LottieFiles for free is fragrantly misleading.

See: https://help.lottiefiles.com/hc/en-us/articles/31356948772121-Do-I-need-a-subscription-to-render-and-download-my-compositions and https://help.lottiefiles.com/hc/en-us/articles/360040012611-Is-the-LottieFiles-plugin-for-After-Effects-free