I ask the following question while being a complete ignorant on the topic of SSL/TLS encryption technologies and “encryption certificates” so please excuse me for anything absurd.
I will further say that I have great respect for the Let's Encrypt project and have presented Let's Encrypt encryption certificates which I have reasily created with the beloved Certbot, several years in the past.
Is it a Search Engine Optimization (SEO) problem to change an existing encryption certificate from a large domain registrar such as Namecheap or GoDaddy or Domain or Google Domains or Name or Hostgator or Bluehost or SiteGround etc. especially if such domain registrar defines this certificate as a "premium product", to those of a free/gratis encryption certification supplier such as the Let’s Encrypt project or any other free/gratis “rival” of Let’s Encrypt project?
Why I ask this question
I ask this question because I bought several ecryption certificates from my domain Registrar Namecheap but my website hosting provider is not Namecheap, rather, it is DigitalOcean and I was astound from how complex it is, at least in my mind, to use my domain registrar encryption certificates for my websites on DigitalOcean, compared to some other trivial action associating the two parties, such as Pointing DNSs from Namecheap to DigitalOcean.
There is no “Point certificates” simple action.
If it is that complex for me, perhaps I should switch from payed (possibly "premium") to free/gratis (possibly "non premium"), but is it an SEO problem?
No, it is not any sort of SEO problem. While some search engines will boost https over http, that's the extent of it. Paying more for a certificate doesn't give you any better security, or give any better signal to a search engine that the content is meaningful to its users. The only reason to pay more (or anything) for a certificate is if you want the extra features it provides you (such as a web console helping you organize your certificates, or a support number you can call to talk to someone if you have questions). It doesn't do anything different for your users. (With the possible exception of getting an OV/EV certificate, which might mean your users could have some confidence in what organization is hosting the site, but even then it wouldn't impact SEO or make anything more "secure" in any technical sense.)
I understand your general point and I think I enerally agree with anything you said although I never heard before about the terms OV (Organization Validation) and EV (Extended Validation) and I am not sure if I currently have the background knowledge to fully understand their meaning.
I'd assume that we could rely on the assumption that the "general type" of an encryption certificate (closed source or open source) doesn't effect SEO in the level of 99% but not 100% because we generally don't exactly know what goes in the mind of the developers of any of the major search engines (Google, Bing, Baidu, Yandex, and even self-declerated non tracking DuckDuckGo).
I would especially say this if encryption certifications are sold by Google LLC themselves via their "Google Domains" service which I never knew existing until today (it is unclear to me from their website if they sell or even gratisly provide any encryption certificates).
All I am saying is that sometimes, frequently or seldom, we just can't be sure how a certain search engine works.
Again I ask for pardon about anything absurd I wrote.
Oh, sure. I mean, I certainly don't work for Google, and I suppose could be that they decide that anything using their own CA, or some other paid CA, or whatever should get a couple bonus points in whatever sort algorithm they're using. But I haven't heard of them doing anything like that, they don't advertise anything like that which I can find, and I can't really imagine why they would. The search engines care much more about whether they're providing relevant results (and thereby relevant ads), and whether a site is using a free certificate or a paid certificate doesn't really have any correlation to whether it's got the content that their users are looking for.
Most browsers have effectively relegated these overpriced schemes to the dustbin of history. They are effectively dead in the minds of everyone in the TLS/SSL community except those still hawking them.
I noted in a thread a couple of years ago that people can, if they're curious, tell about how much you paid for your certificates (and for that matter other aspects of your web site technology), and they could choose to make judgments based on that. They might be more impressed if they see that you spent more money on the site, even if you didn't have to.
There isn't necessarily a way to predict this. Other people could also think negatively of you if they saw that you spent more money than you had to.
I think there are cases where seeing that someone spent resources on something builds credibility, and web site infrastructure is less and less often one of those cases.