Contacts don't synchronize

Windows 7 64-bit
Galaxy S4
AirDroid version 3.1.2

Contacts have never synchronized - installing latest versions of AirDroid doesn't make any difference. (it just shows 'Loading' and stays like that permanently without progressing)

I created a 'dummy' contact to test the contact connection from Windows to handset and it was created ok (but still didn't show under Contacts on the web although it could be seen on the handset )

Experiencing same issue here. I have also seen multiple feedbacks regarding this issue (contacts not syncing on Airdroid) at the Playstore. Using latest version of Airdroid on both PC and Android phone.

Windows 7 64-bit
Galaxy S4
AirDroid version 3.1.2

Contacts have never synchronized - installing latest versions of AirDroid doesn't make any difference. (it just shows 'Loading' and stays like that permanently without progressing)

I created a 'dummy' contact to test the contact connection from Windows to handset and it was created ok (but still didn't show under Contacts on the web although it could be seen on the handset ) 

You mean you can't see contacts with AirDroid Win? Can you attach a screenshot?

As to the contact created successfully on your phone but doesn't sync to web, please refresh and try again. And if the contact you created on your phone doesn't include a phone number, the contact will show in "All" category of Contacts. 
 

You mean you can't see contacts with AirDroid Win? Can you attach a screenshot?

As to the contact created successfully on your phone but doesn't sync to web, please refresh and try again. And if the contact you created on your phone doesn't include a phone number, the contact will show in "All" category of Contacts.

Here is a screenshot. I too have the same problem. My phone is a Lenovo A536 and working on a Linux PC. I tried it in Firefox and Chromium.

Here is a screenshot. I too have the same problem. My phone is a Lenovo A536 and working on a Linux PC. I tried it in Firefox and Chromium.

Do you have a large amount of contacts? And you can try web.airdroid.com/2.0.9 to see if you can load contacts normally.

The same issue with latest AirDroid for Win.
Web version: Current doesn't work, 2.0.9 works well.
Sony ZR, Mokee 4.4.4. about 2000 contacts in 3 Google accounts...

Can you load contacts normally with http://web.airdroid.com?

No, cannot synchronize with http://web.airdroid.com.com
Can synchronyze with http://web.airdroid.com.com/2.0.9 after clearing App data on phone.

No, cannot synchronize with http://web.airdroid.com.com
Can synchronyze with http://web.airdroid.com.com/2.0.9 after clearing App data on phone.

Got it. Thanks for the continuous feedback. I've forwarded it to the developers.