Importing from punt.nl weblog in WordPress

After years of blogging on a Dutch blogging platform called Punt.nl, I now made a choice to switch to WordPress. I have the basics set up already.

I noticed that there are a lot of import possibilities from several other blogging platforms (even Web-Log.nl, which is the competitor of Punt.nl).

I can create a back-up that puts all my archived blogs into an xml.bak file.

Is there anyone that can help, wants to give it a go or can give me hints and tips?

My old blog: https://nbr.punt.nl
My WordPress blog (under construction) https://www.nbrplaza.com