1. First unlock the iPhone5, and open the PP assistant on the mobile phone desktop of ios 13.2.2, as shown below.

2. Then, in the opened software, directly search for WeChat, as shown in the figure below.

3. Then on the open search page, as shown in the figure below, click to enter the details of WeChat.

4. Then in the page that opens, click Version History, as shown in the figure below.

5. Then, in the opened page, select a moderate old version, as shown in the figure below.

6. Finally, click Install Old Version, as shown in the figure below.