I need a specialist WordPress developer

I need some changes to an existing website. 1. Integration with e-goi interface.      2. Check configuration of universodoc emails.      3. Create a field for the user to register for the newsletter at the registration stage.      4. You should ask for confirmation in order to register the account.      5. Correct subscription plan.      6. Confirm that the payment of the user Dimas Milcheski (basic plan) will actually be computed by Pagseguro after the trial period.      7. Check if the plan configuration is done correctly with Pagseguro. We did a test trying to buy a plan and it went wrong.      8. Remove test periods.      9. Correct plans following new rules. 10. "Make the video block editable through the admin panel.      11. Replace the video with this one.      12. Decrease the font size of the fields.      13. When accessing the videos and course materials I got the feeling that a vertical scroll bar is missing. Without it, neither the video nor the materials appear entirely on the screen.      14. The teaser video is not showing to the non-subscriber. That's right? - PUT IN THE BODY OF PUBLICATION.      15. When clicking on the menu (three dashes) the scroll bar does not appear and it is not possible to scroll down and view other buttons, such as “Courses”.      16. Relayout the login page (Register).      17. The presentation video of the courses must also appear for the non-subscriber.      18. Change layout pag. "I forgot my password".