Mobile does NOT work on android devices

Hi All, 

I am exploring Nintex Mobile for my Andriod phone (Samsung Galaxy S7). The environment  is Office 365 with SharePoint Online. 

I referred to this URL to configure apps but still do not work for my solution : 

Company has 2 accounts for each 
1) For corporate account with email address as First.Last@company.com 

2) Office account with email address as First.Last@company.org 
 

Downloaded the 

• Firstly accessed the site from Chrome Brower and it worked well. 
  
  
   
• Downloaded the Nintex Mobile and accessed the same URL as above but got an error. 
  
  
   
• 
• 

Any other additional configuration required for Mobile apps for Andriod?? 

Please advice. ‌ ‌ ‌ 

Thanks in advance.