Issues setting up an app development test environment

I want to develop an app that will use the Multi-player Storage feature.
To understand how it works I’ve first installed blockstack and followed the tutorial. Everything went as expected.

Now that I want to expand on this tutorial and test the feature with multiple username IDs I’ve installed a Blockstack Test Environment. I’ve adjusted the blockstack version in docker-compose.yaml to latest. The installation went fine.

Then I’ve transferred the test 50 BTCs from the core wallet to my blockstack wallet and registered a username. This process went fine as well.

Now the issues using the same app from the Multi-player Storage tutorial:

1: Signing in with an identity address that does not have a username yet, results in the browser console with:

connectToGaiaHub: https://hub.blockstack.org/hub_info
Failed to load resource: the server responded with a status of 404 () gaia.blockstack.org/hub/1B3pa23a8YKLs9zXPh7oAvK1vGwccb7s2x/statuses.json
getFile statuses.json returned 404, returning null

2: Signing in with an identity address that does have a username (registered with test BTC), results in the browser console with:

Failed to load resource: the server responded with a status of 404 () https://core.blockstack.org/v1/names/my_test_username.id

Any help on how to use the test environment with gaia and have multiple test usernames without having to pay actual BTC would be greatly appreciated.