Problem adding a font in fontself

Hi, I am creating a typography in illustrator in black and when I put it in fontself I get some modules in white when it shouldn’t be so, I have tried to join them with the shape creator but it doesn’t allow me. Could someone tell me what is the reason and how can I fix it? Thanks

Hello and welcome to this forum.

You try my javascript
I wrote this for this problem.

On my account ypu can find more fontself helpers.

– jens.