Hello Henny,
Thank you for writing in. Since passwords are now case sensitive, please double check the capitalization of your password to make sure it is correct.
Hier het antwoord van geocaching .com wat het probleem opgelost heeft
Additionally, if you are using Internet Explorer as your web browser, and have added Geocaching.com to the list of trusted websites in IE, this may be affecting your log in issues. We recommend that you remove it from the list (steps below).
Go to the "Tools" menu in your web browser and click "Internet Options". Then click the "Security" tab. Click the "Sites" button. If Geocaching.com is listed, click on it and then click "Remove".
Once Geocaching.com is removed from the "Trusted Websites" list, log in to the site. You should now be able to stay logged in to Geocaching.com.
Please let me know if you have any questions or need further assistance, or if this did not solve your problem.
Jessica