Voice generation w/SSML requires internet connection

This might be the same problem I reported a couple of months ago:
Unable to connect. Check your internet connection and try again. | E-Learning Heroes

Hi DreaB,

Thanks for reaching out! I noticed CarlFink1 linked to an earlier discussion that may be related.

In Carl's case, the "Unable to connect" message turned out to be somewhat misleading. While it suggests a connectivity issue, we found that the error can also appear when Storyline encounters unsupported or invalid SSML rather than an actual internet connection problem.

For example, some SSML tags, such as <emphasis>, aren't supported by neural voices and can trigger the same error message. Invalid SSML syntax can produce similar results as well.

Would you be willing to share the SSML you're using and confirm whether Danielle is selected as a neural voice? That may help us determine whether an unsupported tag or syntax issue is causing the behavior.

If you'd prefer to share the content privately, you're also welcome to open a support case so our team can take a closer look.

Of course! Danielle is a neural voice, and the sample below includes tags that should be supported, but are still generating an error:

<speak>
Filter for names that contain any content. <break> For example, "test" returns any program with test in its name. <s>Note that the capitalization of the text doesn't matter.</s>You can capitalize or not.

<p>Click the Clear button to remove the filter, then click the Search button to see all the programs again. <p>This time, limit the search to programs that contain "testing" in the name.
</speak>