MTD - Testing

YA_BF

Hi all,
We are currently trying to set up MTD (HMRC) for a client based in UK using Business Central (on the cloud) but we're struggling to connect to the test api - is this still possible?
We of course would like to test and get used to the functionality before submitting the actual VAT. When going to service connections, we have the option of HMRC VAT Setup but it links to https://api.service.hmrc.gov.uk but not to the test api (https://test-api.service.hmrc.gov.uk).
Tried also from a sandbox environment but it still gives the same issue.

Can anyone help with this, please? Is there a way how to test MTD without submitting the actual return?

Thanks in advance!