HELP! - I can't buy a Colosseum full experience guided tour through the official website

Guys, I did exactly what was said in this subreddit and today at 8:45 AM Rome time, exactly 30 days before the day I want to visit the Colosseum, I woke up and until now, 12:33 PM Rome Time, I still haven't been able to get tickets for the full guided tour. They simply don't even appear for me, even though I did everything you said here. The ticket is for the FULL EXPERIENCE - GUIDED TOUR with access to the underground. They only appear when they are already sold out. I'm fed up with this, I need to sleep and work normally. Is there any other reliable way to buy the ticket? Through LivTours? Walks of Italy? WithLocals? The Roman Guy? Get Your Guide?

And I thought it would be easy to get them because February is low season in Rome...

Share your experiences when you've bought a tour outside the official Colosseum website, please.

It will be my honeymoon, I am dying to do this tour...

Thank you! :)