One day many years ago I had too many drinks and being stupid and naive and I bought adobe cs5. I still use it on the same computer I installed it a decade ago. Activated and installed only once. Today they revoked the access to it. Clicking the link they say "revoked because purchased from an untrustworthy reseller"

Yeah... untrustworthy reseller, look at the invoice and see who sold&shipped that physical copy...

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Contacted support, they said that they won't do anything about it because it's EOL.

Moral of the story: don't do like me. If buying isn’t owning, piracy isn’t stealing. Never give your money to Adobe.