I can no longer enter the club. Yesterday I had no problems.

Maybe there's something adrift with Java on your pc.

Below are some suggestions that may help.

(*) Clear the JAVA temporary internet files, restart the computer. 

1. Click the Windows button - lower left corner of your screen (right click if Windows 8 or Windows 10)  --> Control Panel
2. On the next page: click the Java Icon ( the coffee cup)
3. Select the General Tab
4. Look for  Temporary Internet Files and click [Settings]
5. Next box: click [Delete Files...]
6. Tick all items in the window that pops-up and click OK
7. Click OK again
8. Important:    RESTART    the computer !

(*) Restart the router and/or  the modem. 

(*) Using a different web browser (not Edge or Chrome) to open our web site and to enter the club sometimes does the trick.