Can you post your Troubleshooting Information? Help (Alt-H) - Troubleshooting Information

Here is the troubleshooting info:

 Application Basics

   Name: Thunderbird
   Version: 38.2.0
   User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0
   Profile Folder: Show Folder

             (Local drive)
   Application Build ID: 20150813074416
   Enabled Plugins: about:plugins
   Build Configuration: about:buildconfig
   Memory Use: about:memory

 Mail and News Accounts

 Crash Reports

 Extensions
   Lightning, 4.0.2, true, {e2fda1a4-762b-4020-b5ad-a41df1933103}

 Important Modified Preferences

   Name: Value

     browser.cache.disk.capacity: 358400
     browser.cache.disk.smart_size_cached_value: 358400
     browser.cache.disk.smart_size.first_run: false
     browser.cache.disk.smart_size.use_old_max: false
     extensions.lastAppVersion: 38.2.0
     font.name.monospace.el: Consolas
     font.name.monospace.x-cyrillic: Consolas
     font.name.monospace.x-unicode: Consolas
     font.name.monospace.x-western: Consolas
     font.name.sans-serif.el: Calibri
     font.name.sans-serif.x-cyrillic: Calibri
     font.name.sans-serif.x-unicode: Calibri
     font.name.sans-serif.x-western: Calibri
     font.name.serif.el: Cambria
     font.name.serif.x-cyrillic: Cambria
     font.name.serif.x-unicode: Cambria
     font.name.serif.x-western: Cambria
     font.size.fixed.el: 14
     font.size.fixed.x-cyrillic: 14
     font.size.fixed.x-unicode: 14
     font.size.fixed.x-western: 14
     font.size.variable.el: 17
     font.size.variable.x-cyrillic: 17
     font.size.variable.x-unicode: 17
     font.size.variable.x-western: 17
     mail.openMessageBehavior.version: 1
     mailnews.database.global.datastore.id: c0ba2470-b91d-4490-9d34-bd274263fc1
     network.cookie.prefsMigrated: true
     places.database.lastMaintenance: 1439879081
     places.history.expiration.transient_current_max_pages: 67809
     plugin.importedState: true

 Graphics

     Adapter Description: RDPDD Chained DD
     Vendor ID: 0x0000
     Device ID: 0x0000
     Adapter RAM: Unknown
     Adapter Drivers: RDPDD
     Adapter Description (GPU #2): Intel(R) Graphics Media Accelerator HD
     Vendor ID (GPU #2): 0x8086
     Device ID (GPU #2): 0x0042
     Adapter RAM (GPU #2): Unknown
     Adapter Drivers (GPU #2): igdumd64 igd10umd64 igdumdx32 igd10umd32
     Driver Version (GPU #2): 8.15.10.1968
     Driver Date (GPU #2): 10-8-2009
     Direct2D Enabled: Blocked for your graphics card because of unresolved driver issues.
     DirectWrite Enabled: false (6.1.7600.16699)
     ClearType Parameters: ClearType parameters not found
     WebGL Renderer: Blocked for your graphics card because of unresolved driver issues.
     GPU Accelerated Windows: 0. Blocked for your graphics card because of unresolved driver issues.

     AzureCanvasBackend: skia
     AzureSkiaAccelerated: 0
     AzureFallbackCanvasBackend: cairo
     AzureContentBackend: cairo

 JavaScript

 Incremental GC: 1

 Accessibility

   Activated: 0
   Prevent Accessibility: 0

 Library Versions

     Expected minimum version
     Version in use

     NSPR
     4.10.8
     4.10.8

     NSS
     3.19.2 Basic ECC
     3.19.2 Basic ECC

     NSS Util
     3.19.2
     3.19.2

     NSS SSL
     3.19.2 Basic ECC
     3.19.2 Basic ECC

     NSS S/MIME
     3.19.2 Basic ECC
     3.19.2 Basic ECC

The server settings you posted above look good. With OAuth2 authentication 2-step verification is not needed. So I don't know what's wrong. May be a typo? You do also have Lightning installed. Do you have a Google Calendar by any chance? Does Gmail authentication work for that?

It can't be a typo. I tried several times without any luck.

I don't have Google Calender.

How can I troubleshoot this further?