Whatsapp Business Api Integration -> Phone number always remains under verifying status

Hey Meta Horizon family,

Kindly help me in whatsapp business api integration flow. I am a Java Developer Intern at a company. I made a whatsapp business integration project as my company require it. But I have stuck in number verification stage. The mete doesn't verify the the number. It always says name is under review. What could be the reason anyone can say me? It has stuck in 2nd verification also. At first It was stuck for almost over 20 days. After that the status was changed to unverified. I again applied for it on day before yesterday. Please help me how could I go to next steps?