Last night (actually, very early this morning) mechanicjay generated and installed new Let's Encrypt certs for our servers.
I made a quick check and everything seems to be in place. The old certs were due to expire right about now, so if you do have any issues, please pop onto IRC (preferred) or reply here and let us know!
"Because Let's Encrypt requires a DNS TXT record for domain validation in order to pull wildcard certs."
We had this issue with namecheap. It was reason enough for me to dump them, especially after they claimed that eff's certificates were not as secure -- I trust eff.org FAR MORE than most of the paid certificates.
Now we use dreamhost. I don't know what other hosting companies support certbot, but I do know it is a p.i.t.a. to switch.