You have announced that “TLS-SNI-01 validation is reaching end-of-life. It will stop working temporarily on February 13th, 2019, and permanently on March 13th, 2019.”
What does it mean “stop working temporarily” ?
Don’t you worry to put in trouble many of your users who could not manage to update the ACME client ?
In some configurations this process is not as easy as you pretend it to be.
Personnaly I tried it with the support of your team and failed. I had to reverse back to TLS-SNI-01 which is not that straightforward neither.
At least you should, please, let us some more time.