WiFi Protected Access (WPA) is the first generation of WPA2 which is now the gold standard of what's used today
WiFi Protected Access (WPA) was an interim replacement for Wired Equivalent Privacy (WEP). WEP had known vulnerabilities and should not be used. WPA provided an immediate solution to the weaknesses of WEP without requiring users to upgrade their hardware. Even when WPA replaced WEP, its developers recognized that WPA wasn't a solid enough to last for an extended period. So that's why nowadays people use the stronger WPA2 protocol.
WPA is susceptible to hacking and password cracking and should not be used.
Use the WiFi Scanner Security filter to see what protocol you are using and if there are any outdated networks in your area that are still using the old WPA protocol.