COVID certificate

All questions on this topic
I only have my COVID certificate electronically in the COVID Certificate app. How can I get the certificate as a PDF or on paper?
Why should I renew the QR code of my COVID certificate?
What happens if I lose my COVID certificate?
Where are my data stored for the COVID certificate?
How long is my COVID certificate valid after a booster?
In what language is the COVID certificate issued?
What data does the QR code contain?
I’ve had two vaccine doses and qualify as boosted on account of a subsequent infection. Why does it say 2/2 and not 3/3 on my certificate of vaccination?
Can I travel to an EU/Schengen country even without a COVID certificate? What do I have to remember if I do?
I was vaccinated with a vaccine adapted to a new virus variant (e.g. omicron). Is this so-called bivalent vaccine differentiated on my COVID certificate?
Can COVID certificates for travel abroad also be issued to children and young people?
I got coronavirus after being vaccinated. Which COVID certificate do I get?
What must I do if the information on the COVID certificate is incorrect?
What is a “certificate light”?
What is done to prevent misuse or forgery of the COVID certificate?
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