Which paper to send
A vigselbevis comes from the person who married you, a priest or a civil officiant. It shows that the wedding took place, the date, and the names you had that day.
A personbevis from Skatteverket is a different paper. It shows what the population register says now: whether you are still married, and to whom. A divorce does not rewrite the old vigselbevis. The personbevis does.
The letter rarely says vigselbevis. Marriage certificate can mean the vigselbevis, the personbevis, or both. Send the letter, and we will say which papers it actually names.
If someone changed their name after the wedding, the vigselbevis keeps the name from that day. The personbevis shows the name as it is now.
Send the paper original. The apostille sits on the officiant certificate, not on the translation. A PDF you print at home is a copy, and the copy is the wrong paper. If you have lost the original, the officiant can sometimes print a new one. Skatteverket does not reprint a vigselbevis. They print a personbevis.