We have had the opposite problem in the past. A cert provider requiring us to exist in certain international directories of companies took weeks of waiting around on bureaucratic red tape.
Then they didn’t even call us to verify our existance, place of business or anything (yeah, this was one of the big certificate providers a long time ago).
Their website was horrible, and their support wasn’t better.
LetsEncrypt though hasn’t failed me once since it was setup, and that is over hundreds of domains with thousands of renewals.
Same - Evolution offers one thing Firebird dosen’t - connecting to the work cloud Microsoft account!