Dear @Eva315 , so sorry to hear this.
You are a host of two private rooms in Sweden. Your house rules in listing #1 state clearly “Important !!! negativ covid 19 test (24 h old) is mandatory plus full Covid 19 vaccination (2-3 shuts).” and listing #2 says “You need to provide me with a covid 19 test plus vacination ID (proof of at least 2 shuts vaccination) No covid 19 positive guests or non vaccinated are allowed in the house.”
Sometimes guest don’t read the rules. As I have a similar situation I repeat this super-important information at more prominent places. I disabled IB, and I clear this before accepting.
https://www.airbnb.com/resources/hosting-homes/a/answers-to-your-hosting-questions-about-covid-19-14... says:
Can I require my guests to be vaccinated or tested for COVID-19?
Hosts can set their own house rules, including specifying whether they require guests to be vaccinated or recently tested for COVID-19, unless prohibited under applicable local laws or regulations.
If you’re requiring guests to be vaccinated or recently tested, be sure to say so clearly and prominently in your listing description as well as in your house rules, so potential guests don’t miss it.
IMHO there should be no problem for you and no penalty if you have asked your guests to be fully vaccinated. If an agent has a different opinion, show him the Airbnb rules.
But, it could be a totally different matter regarding the cancellation fee. Often, in such cases, the customer service tends to cancel these bookings neutrally, without fee.
IMHO you should insist to get your case escalated to a higher agent, to get a deeper insight. If they resist or close the case without further discussion, we can help you to re-open or escalate.