No, I was not aware Helix was down. I have always clicked the link for it at the top of the Grams Search Engine. Unless I somehow grabbed a bad URL for Grams...
Can you share the helix URL here that you recently use? It can help everyone to spot those fake mixer and to avoid scam.
Recently there are many clone mixers pop up on the search engine sample this image below.
Don't click any sites from ads they are most likely scam/fake sites.
Be careful next time because there are many scammers out there due to price increase.