Have you tried to unmark the email as spam and ensure that the filter was set to “never send to spam”? Also, there should not be a label on Gmail called “junk” unless you created that yourself and in which case if it was one you created then you can delete it. Unmark an email as spam.
You can remove an email from Spam if you incorrectly marked it as spam:
1. On your computer, open [Gmail].
2. On the left, click Spam. If you don’t see Spam, click More.
3. Open the email.
4. At the top of the page, click Not spam.
Tip: To stop a message from being sent to Spam in the future, you can:
– Add the sender to your Contacts
– Filter these messages