If you want to be totally professional.

And show you are in the driver's seat,You can write: 

"Thank you for the rent. As stipulated in our lease agreement, the rent is due on the first of each month. Appreciate your cooperation going forward, thanks!"

其他廢話少說. （我們的合同5號之前收到都OK， 你去讀一下你怎麽

和她簽合同的， 我寫的英文是假設你合同裏有每月1號）

所有跟帖： 

• 我的是3 號收到OK 她的意思是人難免有特殊情況 可是她每月都拖 才搬進去三個月 -westandingup- ♀ (0 bytes) () 11/10/2023 postreply 18:16:36

• 你不要管她啥意思. 口氣堅決一點 -喜喜哈哈- ♀ (121 bytes) () 11/10/2023 postreply 18:24:32

• 是的 謝謝支持 -westandingup- ♀ (0 bytes) () 11/10/2023 postreply 18:30:57