My emails are getting blocked by google even though I use Sendgrid

Job ID: 33282668

Budget: $30 – $250 AUD

I noticed this some days ago when I wasn't getting any test emails, then I looked at the blocked files in Sendgrid, and saw there was 5000 email there........ (screenshot is attached)
To make it worse, the email has a Sendgrid reputation of 99%...... these emails are not spam, and they are to our users....... and I need this fixed.
We have also put reverse DNS in place........ but that hasn't helped.
the emails directly affected are:
@wwwmedia.world
this domain is hosted in digital ocean
Related categories: DNS Email Developer SendGrid