Hi,
sorry but I not understand, can you please send me a screenshot about this?

Hi,
thanks for your availability.

it's possible for you to send me your access details? if yes then you can use the form below the reply in "Site Details" tab.

Hi,
I have created a new private group and when I try to invite friends than it works. Try to make a logout/login and test if now works.

I worke with BTlogin for login etc. At this moment the login modules are not shown at the sight... Something to do with this problem?

I think not.

Hi,
can you please add me (previous login details) as admin of this group? I already have tried to create a new group and works.

See the details

Hi,
I have just tried and works also with your account.

Anyway, after my check I have clean plugin cache, try to restart your browser (or computer) and check if now works.

Hi,

I restart my computer ( after a night not working) and still got the same problem...
Then i tried to invite friends using Google Chrome and it looks allright...
Normally i work with Firefox. Do you think the problem is Firefox? But i do not understand how.

Hi,
I will make other tests in coming hours.

Hi,
sorry for late reply, we are very busy.

To solve try to clean your browser cache.

Still, have you some custom .htaccess?

For some reason your webserver send a header to browser to keep cache and this cause the problem.

How to replicate this error?
- Make a login
- Go to page https://www.schrijverspunt.nl/schrijversplek-openingspagina/groups/view/7/terugblik
- Open a new browser window, go to your site and make a logout
- On the first browser window (with group opened) Click the link to invite friends
- You will see a message "Please login or register", and this is ok, you have tried to invite a friends but you have make a logout before from another page
- Now you will see always "Please login or register" also after login until you does not clean browser cache.

This happen only on your environment.

Do you remember logout link problem? same issue.

yes, it could be.

htaccess is used also for set browser cache behaviors (normally for contents like CSS, Fonts and Javascript resources)