1. Reference URL:https://www.shuijingwanwq.com/2022/01/21/5772/. The personal identification code (PIN code) mailed has never been received. In the end, I had to send a proof of identity, so that I no longer need to enter a personal identification code.

2. The last time is the 4th attempt to verify the PIN code, the date is: 2022-01-10. as shown in Figure 1

Figure 1

3. Unexpectedly, the 4th time I successfully received a mailed Google AdSense Personal ID (PIN code) letter. The date is: 2022-02-16. as long as a month. as shown in Figure 2

Figure 2

4. After opening the envelope, the content of the letter is mainly the 6 digits of the PIN, and the specific steps to complete the verification of the personal identification code. as shown in Figure 3

Figure 3