Spacehey deleting codes

I don't know if this is the right forum to ask but recently spacehey has been DELETING MY FREAKING CODES!!! So far it's <style> for my friends' masks and </iframe> for my background music, I made sure there was no other iframe codes, just that one, but it keeps deleting, both on PC and phone, is this a common and fixable issue or am I screwed...