face issue in activation

Which Adobe product version #?

Which Win or Mac operating system do you have?

Most Creative Cloud apps work on:

• Windows 10 versions 21H1, 20H2, 2004, and 1909 (LTSB branches are not supported);
• macOS 12 (Monterey), macOS 11 (Big Sur), macOS 10.16 or 10.15 (Catalina)

- https://helpx.adobe.com/creative-cloud/system-requirements.html

PRE-CREATIVE CLOUD (legacy Creative Suite):

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CS1, CS2, CS3 and CS4 activation servers are dead & gone. It's impossible to activate the software now.

CS5 and CS6 are on life support. But they can still be activated providing you have the following:
1. your original media (disks or downloads) you received at purchase and a way to read them,
2. a legitimate serial number for that version, language and platform (Win/Mac) and if it was an upgrade, a qualifying serial number from an older product,
3. an older operating system that can support legacy 32-bit apps.

NOTE 1 : Creative Suite installers won't work on macOS Sierra, High Sierra or Mojave without terminal workarounds. See the help article below.
https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

NOTE 2: Legacy Creative Suite will never run on Catalina, Big Sur or Monterey. Nor will it be tested on Win 11. Only the latest Creative Cloud products are compatible with newer systems.

NOTE 3: Legacy Creative Suite is discontinued & unsupported. Use at your own risk.

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Beware of fake Adobe reps who may contact you privately offering to sell you software or take control of your computer. It's a scam, run away! Real Adobe employees will never reach out via Outlook, Yahoo, Gmail or Skype.
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3 Easy Ways to Identify Genuine Adobe Staff
https://tinyurl.com/10791730

Hello, can you tell us more? The plan, your computer, your OS ?