Unable to login in O2 application

I want to cancel my O2 DSL Contract from web login because I am unable to login via mobiel in O2 application. Please help!

Edit by o2_Manuela: Topics connected. Please only use one thread for one topic. Thanks! You can find more information in our netiquette. :) // 29.07.22, 19:13 Uhr

I am facing same issue and I posted about this issue seperately 

I tried with my email address, reference number and username but issue still remain. My password is correct 100% Please help. Thanks!

Edit by o2_Manuela: separated from: 

03.08.22, 12:15 Uhr

Hey @nakhtar ,
ckeck out this Link: Contract Cancellation | O₂ Community (o2online.de) 
This might be helpful. Please let me know, if you need further help.
Best, Matea
 

Hello @nakhtar , 

please stay with one topic in your own thread. 

In this case we have a better overview. 

You cannot login via Mein o2 App ? 

How about the login via Browser, does this work for you?

Best regards, 

Manuela

In browser I can access but in mobile applicaion showing error (-1)

Hey @nakhtar ,
ist working by now?
Best, Matea

Still no resolve.