Whitelisting To ensure that the Twinkl website and app work properly, you will need to allow HTTP/HTTPS access for your local domain, as well as *.twinkl.co.uk / twinkl.co.uk and *.twinkl.com / twinkl.com. By using these wildcard whitelist entries, you can ensure that all our current sub-domains can be accessed, as well as any new ones that may be added as Twinkl continues to grow. Getting More Help If you need further assistance with understanding or setting up whitelisting for Twinkl, our TwinklCares team will be able to guide you. Simply contact us and include a screenshot of any issues you are experiencing. We may require additional screenshots or schedule a phone call with our technical team as part of the support process. Become a Twinkl member now and gain instant access to thousands of resources!