When you are already a member of KNPV, you do not have to subscribe as a new member, of course. There are two was to retrieve your login data:

When your e-mailaddress is known to KNPV, you can click the link forgot your password (on the right, below the login field). This is the fastest way (15 minutes).

When your email address is not known to KNPV, please send an e-mail to: . Please indicate your name and address. You will receive your login data per e-mail a.s.a.p. This is not automated, so it may take some time.

If you can login, take a look at My data in the Member menu. Here you can check your own data and modify them.