IT Expert Needed – Outlook / Gmail / Android Sync Issues

I am looking for a highly experienced IT professional (not basic helpdesk level) to resolve specific synchronization and configuration issues.

2 Issues to Resolve:
1)
Gmail + Microsoft Outlook (Desktop – Classic Outlook)
Gmail account was previously working and syncing
Stopped syncing → removed account
Now unable to re-add Gmail to classic Outlook
Works on New Outlook, but I need it fixed on the classic version
2)
Outlook Calendar Sync with Android
Work Outlook calendar used to sync with Android calendar
Old meetings still visible
New meetings are NOT syncing
Requires proper diagnosis and fix (not workaround)

Requirements:
Strong expertise in:
Gmail / IMAP / Google security & app passwords
Microsoft Outlook (especially classic vs new Outlook differences)
Android calendar sync (Exchange / Outlook / Google integration)
Ability to troubleshoot deeply and resolve root causes
Must have handled similar issues before

Important:
This is not for beginners
I expect a full fix, not trial-and-error
Payment will be made only if the issues are fully resolved

Engagement:
Remote support
Paid hourly or fixed fee (to be agreed)

To Apply:
Send a brief message explaining:
Similar issues you’ve solved
Your approach to fixing this
Your availability