Bugs in content types

Report and discuss bugs related to specific H5P content types

"Loading, please wait" when trying to

Hello!

I am trying to create/upload ectivities in H5P in FireFox desktop, but am unable to it as I get a "Loading, please wait" message that doesn't disappear:

I am trying to use the content type Drag the Words, but I am sure it doesn't work for other types.

I am using H5P Version 1.15.0 on WordPress. This feature works in our Moodle.

Any ideas on why this is happening? I have heard hints online it may have something to do with a cross-origin policy.

Many thanks!

Console logs:

Pages