Could someone have came in your room? Other than you or another person doing it purposefully or accedentally, like brushing up against it, i have no idea how that could happen.
If it was Lucifer, it could be a sign that you connected and don't need it anymore for this issue.
No, I live with my boyfriend and he didn't get up at all. It's in my kitchen, on my fridge, out of the way of anyone walking past it. I'm a light sleeper, so him getting up in the middle of the night would wake me up.
First off - why would you attempt to summon lucifer?
Do you know how to safely conjure or summon an entity?
Do you have wards, shields, or other forms of protection against spiritual attacks, malicious entities, or curses?
Do you have proper discernment skills?
Why would Lucifer, a fallen angel of light, want to help you? What did you offer or what could you offer to him for his service?
I ask all of these questions because, 1) Lucifer is a high-profile entity. Without proper knowledge, protections, or wards, any entity who knows how to disguise themselves could enter your home and you would be none the wiser. 2) Why would a high profile entity help you, or why would you feel you need to summon them instead of literally any other spirit?
It is true that entities can affect the physical world thru manifestation. A sigil being half erased could be the entity's attempt at removing themselffrom the situation, or it could be them just being a trickster. Some may even infer that it is to prevent you from erasing the sigil in an attempt to banish them.
I summoned him because he visited me in a dream. Yes, I know how to protect myself. I know how to banish unwanted entities, and I could tell by the energy around the magnificent being, it was truly him. Also I've worked with him in the past. My first incounter was when HE visited me, and my spirit guide informed me this was the true Lucifer. I've communicated with casually. I personally don't share what I do, when it comes to spirits and Magickal workings; not even with my boyfriend. It's between me, Gaia, and if there, the third party entity. I hope that doesn't come off as rude, just a personal belief I have.