I think the whole sperm donor online thing is extremely dangerous. They are basically hook up sites/groups for men. The women are vulnerable and are taking a risk.
I've read other threads where posters explain that STD tests are done and he gets the tests results by text but that this isn't a guarantee. Why wouldn't you want a guarantee?
Aside from the dangers to your health with STIs and STDs from 'natural conception' (just call it what it is, sex), there are dangers to your safety. Even if background checks are done there is no way of knowing if the man is dangerous or not. How do you know you won't be raped and murdered? Is there a background check done with the websites and groups?
Do they have family history?
If a man wants to sow his oats but not be involved in a potential child's life, what does that say about him?
Even the clinics can't be 100% relied upon. Here's a very recent story from the US for you to share OP:
The case involves Donor 9623, who claimed in his donor profile that he had an IQ of 160, was working on his PhD in neuroscience engineering and had no health problems. But when Donor 9623's name was accidentally releasedd_ to some families in 2014, and those families looked him up, the truth came out: he was a college dropout who had been diagnosed with schizophrenia and jailed for burglary.
Early in his donor career, Donor 9623's sperm was sold to Wendy and Janet Norman, who used it to conceive their son, A.A., born in 2002. According to court filings, A.A. has experienced multiple episodes of suicidal and homicidal ideation, takes ADHD, anti-depressant and anti-psychotic medications, and has needed several extended hospitalizationss_. A.A. and his parents only learned about the donor's health and personal issues in 2017, when they did an internet search.
The Normans allege that Xytex claimed to carefully screen a donor's health, criminal history and family history, to rigorously interview and physically examine their donors, and to require a donor to update his medical history every six months; any "medically significant" information would be passed on to families, they allege Xytex said. It turns out, however, that the donor lied. And when Xytex learned of the discrepancies years later, in 2014, they did not inform the Normans.
Donor 9623 has been the subject of more than a dozen lawsuits. Cases in California and Florida have settled, but those in Georgia have been dismissed as nothing more than "wrongful birth" cases — and the state doesn't recognize wrongful birth.