the-nzb

Go to the useres admin pannel and untick the “the rich text editor will be used for this user”

try editing your header.php, you can use simple html

Try to define your URI as “/” insted of https://bla.bla.bla. that suppose to work

Hi
Go to /wp-admin/profile.php (profile manager) and untick the use rich editor as default.
it will give you the old editor and with it you can use the youtube / google video code.
after that you can reactevate the rich editor – but – DO NOT redit the post with it.