Same for me. I get the following messages in the console:
Loading failed for the <script> with source “https://streets.gl/js/index.js”. streets.gl:1:940
A resource is blocked by OpaqueResponseBlocking, please check browser console for details. script.js
Loading failed for the <script> with source “https://analytics.streets.gl/js/script.js”. streets.gl:1:815
Loading failed for the <script> with source “https://streets.gl/js/index.js”. streets.gl:1:940 A resource is blocked by OpaqueResponseBlocking, please check browser console for details. script.js Loading failed for the <script> with source “https://analytics.streets.gl/js/script.js”. streets.gl:1:815