I might be wrong. . .
The requirement for a new key is you have a PWS uploading to WU … I don’t know if you had to have a prior WU API key.
Send a note to Victoria victoria.gardner at ibm.com and ask…
I think I am, here’s a direct quote from the forum: “Personal Weather Station (PWS) owners/contributors will continue to be eligible for a free replacement API service . . .”
(Unless “replacement API” implies “to replace your old one”.)
Ken’s right, try Victoria: [email protected]