MX340 CAN'T PRINT

I have an MX 340 Canon printer, then I'm trying to print from my Google pixel 4a. I have the printer connected to Wi-Fi, at least it says it's connected to Wi-Fi, and I'm using the WPA/wpa2 security. I'm also doing the same on my phone. The Wi-Fi light is on on the printer, but when I select a PDF document to print it doesn't print. Any ideas on how to correct it?