Illustrator automatically vectorizes fonts when opening a pdf

Hello everyone,

I recently translated a pdf via Adobe express.

When I open the Adobe Express export in Illustrator, it automatically vectorizes the fonts even though they are well incorporated and editable in Acrobat Pro.

I've been looking for a solution for a long time but haven't been able to find it.

I have already tried to go back to .ps, also .ps which I have distilled into all the possible pdf versions, I have also tried .eps but nothing works.

Do you have any ideas?

Thank you.