If you are trying from Safari ,try to open it using Chrome and check.
Also if you are looking to download Adobe Creative Cloud app, you may download Adobe Creative Cloud desktop app using below links:
macOS v10.12 or later
https://ccmdl.adobe.com/AdobeProducts/KCCC/CCD/5_4_5/osx10/ACCCx5_4_5_550.dmg
Apple M1 computers
https://ccmdl.adobe.com/AdobeProducts/KCCC/CCD/5_4_5/macarm64/ACCCx5_4_5_550.dmg
macOS v10.11 or earlier
https://ccmdl.adobe.com/AdobeProducts/KCCC/CCD/4_9/osx10/ACCCx4_9_0_504.dmg
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