They are NATing the IPv4s, i.e. multiple customers are sharing the same IPv4, which can cause problems. I called them and told them that I absolutely need to do port forwarding and asked nicely if I could get an exclusive IPv4. The support said „Of course, let me check the box in the UI for your account, should be active by tomorrow“ and done. You have to get lucky to get someone who understands your problem and is willing to fix it, though.
Germany's Paul Ehrlich Institut (Germn federal agency, medical regulatory body and research institution for vaccines and biomedicines) periodically publishes vaccine security reports [1]. In the latest security report for Jan-Sep 2021 [2] (German only), it states in chapter 7.1.2 table 5 the rate of Myo-/Perikarditis per 100,000 vaccine doses of Pfizer (Corminaty) and Moderna (Spikevax) in different age groups:
11.41/100000 for age group 12-17 (based on 2 reports, hence unconfident)
