Scammers on Reddit, Quora, or YouTube comments will ask for $10–$50 via PayPal to "send you the password." They do not have it; they are preying on desperate users.

Stay safe, use legitimate software, and remember: if a deal looks too good to be true (free 2020.23 software for a brand that stopped updates in 2015), it is almost certainly a trap.

To ensure the installation doesn't fail after you enter the password:

Regarding the installation password: