Empty twitter responses for new twitter account


I have set up a new twitter account for a secondary business. Account fine but generating empty responses.
Developer checked everything. There are no errors. Just empty Twitter responses.
He also replaced my access data with his and this works ok.
I created another Twitter account, and added some tweets to it.
then created new app, generated access tokens and secrets and tried to use but to no avail.
WP 3Clicks theme being used
[twitter username=“ourbusiness name” max=“1” type=“carousel”]

Can you advise?