Hi, yes, sorry I forgot to mention that. But on our actual website it is asking for a serial number and we cannot understand why.
A serial number is for only ONE website => weather.whitstablemarine.co.uk
You can not use a WDL serial number on another website.
It ALWAYS helps to give the URL to the site / page with a problem.
In this case the explanation would have been given immediately.
Probably the "attachment WDL1.jpg" you mentioned but did not upload, would also has given a clue.
Solution:Ask Brian for a conversion of the WDL key to your 'actual" website.