4 debugging magento 2.4

Dear,

I need experienced magento developper in debugging.

1 Can't access to Admin panel anymore
2 Header & Footer is gone from Magezon extention provider is gone (https://www.magezon.com/magento-2-header-footer-builder.html)
3 Reinstall B2B multivendor extension (2.4 ) from webkul after upgrade
4 Ninja menu bar is not showing from Magezon extent-ion provider is gone https://www.magezon.com/ninja-menus-drag-n-drop-menu-builder

Please let me know if you are interested,

Alexandre