Adsense verification code missing

meri wordpress website me “adsense verification code missing or incomplete” show ho rha hai. jbki maine header men paste kiye. fir remove krke Sitekit ke through kiya. fir bhi vahi show rha hai. fir maine INSERT HEADER AND FOOTER plugin ke through kiya. lekin result vahi show ho rha hai. please help me.

is plugin ka use karo