Solid food items (not liquids or gels) can be transported in either your carry-on or checked bags. Liquid or gel food items larger than 3.4 oz are not allowed in carry-on bags and should be placed in your checked bags if possible.
Please note that different immigration offices use different paperwork.
https://www.google.com/search?q=tm+30+inside+a+passport&sca_esv=31c11a842872212b&hl=en&tbm=isch&sxsrf=ACQVn0--UhWTCgxJ7Hsngyx5osMfQQfDSQ%3A1710230657725&source=hp&biw=1440&bih=739&ei=gQzwZfGPKqa64-EP7ImD4Ac&iflsig=ANes7DEAAAAAZfAakYIqKyMZC4TmVAZuqjeGj_F2i_lJ&ved=0ahUKEwix1NfWoe6EAxUm3TgGHezEAHwQ4dUDCA8&uact=5&oq=tm+30+inside+a+passport&gs_lp=EgNpbWciF3RtIDMwIGluc2lkZSBhIHBhc3Nwb3J0SLCGAVC8E1i7gQFwAXgAkAEAmAHUAaABpBKqAQYxNi42LjG4AQPIAQD4AQGKAgtnd3Mtd2l6LWltZ5gCCaAC2QeoAgrCAgcQIxjqAhgnwgIEECMYJ8ICBRAAGIAEwgIIEAAYgAQYsQPCAgsQABiABBiKBRixA8ICBBAAGB7CAgcQABiABBgYmAMXkgcFNS4zLjGgB9Yl&sclient=img#imgrc=9uVNaokN8oPBAM
Now I'm, along with other honest farang are required, by law, to show a TM 30 'Receipt Notification' in my passport. If I don't have that receipt then I'm committing a crime. That shows how hypocritical Thais are.
The OP is a newbie and mixed up. He doesn't have to prove the landlord owns the property. That's for immigration and the landlord to sort out.
Liquorice In the op's initial post he does not state that he was refused a 'visa'. You are reading into something that isn't true.