URGENT: I must go back to the older email version

URGENT: I must go back to the older email version

Please I have no link up right to the old version.
I try to resize as well but no way.
Can you give me a link?
If I cannot reverse sadly i will need to renounce to use it.
The new interface is not OK, I can't even read as the font cut some letters. Customer want old version.
Please help me with the link.
Thank you.