Greek Mythology Mash-Up Pack (v1.0.79) fails to install from Marketplace and returns to download button

The Greek Mythology Mash-Up Pack cannot currently be installed or updated from the Minecraft Marketplace.

When attempting to download the pack, the download progress reaches 100%, briefly shows an "Installing" dialog, and then immediately returns to the Marketplace page for the pack. The download button reappears but no longer responds when clicked.

Steps to reproduce:

1. Open Minecraft Bedrock Edition.

2. Go to the Marketplace.

3. Navigate to the Greek Mythology Mash-Up Pack.

4. Attempt to download/install the pack.

Result:
The download reaches 100%, an install dialog briefly flashes, then the Marketplace page reloads and the download button appears again but becomes non-functional.

Expected result:
The pack should install normally and appear in owned content/world templates.

Additional information:

• The issue occurs on multiple platforms (Windows 11 and Android).

• Other mash-up packs (such as the Norse Mythology and Halloween packs) download and install normally.

• Clearing cached data, restarting the game, and reinstalling the game does not resolve the issue.

• I was only able to use the pack by manually restoring an older backup version of the resource pack (v1.0.75) in Minecraft Bedrock Preview. However, this version lacks textures for newer items such as copper blocks and other content added after that version.