After realising that the problem had nothing to do with the VPN Server, I've 
done further investigation and the most likely cause of this is the check that 
all Android phones have to do before they will connect to a WiFi Network.

On occasions I've caught an error from '
generate_204'.  Sometimes I'm getting 'net::ERR_CONNECTION_ABORTED' and 
sometimes I get 'net::ERR_TIMED_OUT'.  I've posted a typical screenshot at:

The trouble is that during WiFi connection checks a message is sent to that 
URL by the phone and if the response isn't received, then Android believes 
that there is no Internet access and (normally) flags this up to the user with 
an option to ignore before connecting.  It seems that nodogsplash somehow gets 
into the middle of this sometimes and the Welcome splash screen doesn't get 

Even so, a user 'in the know' can still connect to the content by browsing to 
the Home Page, so the connection is still made.  Unfortunately there will be 
no Visitors to WMT who are in the know.

The trouble is that development of nodogsplash seems to be moribund, the last 
commits being about 2 years ago and there have been no issues added since 
October last year.  I therefore suspect that I can't get much help from that 

Has anyone any thoughts on this?  As mentioned elsewhere this problem isn't 
new; we just had less understanding of it 2-3 years ago and it was less 
prevalent.  Before that, I used to display a notice on site which gave 
instructions on how to browse to the Home Page, but this was deemed to be too 
complicated and nodogsplash was installed to make it easier..  I don't really 
want to have to go back to the original approach if possible.


                Terry Coles

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