[The New Active Backup]

For those who are at fault

{"error":{"code":102},"success":false} 

with ABB, Office365, Gsuite. This is my fix, it works with my DSM7.1 (installed on VMWare Esxi)
First Line:

https://URL:PORT/webapi/auth.cgi?api=SYNO.API.Auth&method=Login&version=1&account=USER&passwd=PASS

**Important: Before going to Second line (Most of you get error 102 here)
Go to Package Center -> Download ABB (Office365 or Gsuite depending on you). After installation, turn it off. Then go to the browser (remember to be Incognito). That means I installed it and then I activated it.
for ABB
Second Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackup.Activation&method=get&version=1

Third Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackup.Activation&method=set&version=1&activated=true&serial_number="SERIALNUMBER" 

for Office 365
Second Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackupOffice365&method=get_activation&version=1

Third Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackupOffice365&method=set_activation&version=1&serial_number="SERIALNUMBER"

for G-Suite
Second Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackupGSuite&method=get_activation&version=1

Third Line:

https://URL:PORT/webapi/entry.cgi?api=SYNO.ActiveBackupGSuite&method=set_activation&version=1&serial_number="SERIALNUMBER"

Just try it. have fun! 😀