I think you will find that the original distributor of Alpha software no longer has the agency and therefore it could be difficult to obtain the original key.
I used to have it installed but could not get the data from an earlier bersion to convert properly.
You could try this code 2997405381953922 not sure if it will help.
You could also try this:
1. Copy the following Activation Key to the clipboard by highlighting it, right clicking on it, and then selecting the "Copy" command.
8B 72 A9 2A 1E
13 EA 94 05 C1
AA EF B0 B9 26
BA C3 54 FF 8C
84 5E 6D AB 4B
2. Start Alpha Five V5 (if it is not currently running).
3. Pull down the "Help" menu.
4. Select the "Activate Alpha Five" command.
5. Select the "Enter an Activation Key" command.
6. Right click in the "Action Key" text box and select the "Paste" command.
7. Click the "OK" button.
Hope this is of some help.