Correct img to install on vmm openbsd?

From: <latincom_at_vcn.bc.ca>
Date: Thu, 22 Sep 2022 06:31:36 UTC 
hello

i have had installed FreeBSD at vultr without a problem!, but if i try to
install it in other hosting, it does not work/

What is the correct img to install over VMM openbsd please?

Second question:
I have had problems working to install Lets encrypt, what could be the
siplest wat please?

thanks