hotfix: Optimize Verification Code Handling and Timing Configuration

- Refactor verification code retrieval with dynamic wait time generation
- Use `get_random_wait_time()` for more flexible retry intervals
- Update version to 1.7.04 across project files
- Minor improvements to timing and retry logic in signup process

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Change Log
 
+## v1.7.04
+1. Hotfix: Small Problem | 修復一些小問題
+
 ## v1.7.03
 1. Hotfix: Small Problem | 修復一些小問題