Sub domain validation

I have been using chronoforms since chronoforms3 and have moved through all levels to chronoforms7.

I am now moving all forms to Chronoforms 8.

I am testing on a sub domain of the live site but have started to get the following messages:

For years my live validation key has also worked on the test subdomain.

Has this now changed so I need a licence for every instance? (Quite happy to pay for more licences but keen to know that this is my issue and something else is not going on).

Wallyhowe 

Hi Wallyhowe

No this has not been changed, I will need more info on the domain and sub domains you are working on, Could you please send a message using the Contact page ?