Hi there!
Sorry for the delay.
About your initial issue, appearing a module double:
The module you have published at the content bottom position which is a template defined active position:
https://share.cleanshot.com/B3xVCvCy
And you have created an extra section in the template Options>Layout Builder and assigned the same module position in the template style for English language again:
https://share.cleanshot.com/zlJ69Zsn
https://share.cleanshot.com/V7nxtprv
So the module is appearing in the template defined position and in your extra section both.
So I have temporarily hided the extra one from your template options as follows: https://share.cleanshot.com/9y9p53zY
Please check now and let me know.
Best Regards