Hi @Mingfeng 

This has been an issue all day today.

Ideally, please delete the cache and cookies of your browser and try again. The problem should actually already be solved.

BR

Thanks a lot for your information. @SethVanDoom 

I tried to clear the cache and cookies of my browser, yes, I can log in on the PC, but still cannot log in on my mobile phone.

I deleted the Mein O2 app and then re-installed it again, but it just shows the same as this. I’m using the IOS system, maybe need to wait for the update of this app in the app store?

Thank you, 

Mingfeng

Hello @Mingfeng,

welcome and thank you for your enquiry in our community!
Actually, the error should have been fixed by 13:40. But it still doesn't work for you?

Thank you @SethVanDoom for the quick reply and link to the thread!

Kind regards
Jessica

Dear Jessica, @o2_Jessica 

Thank you for your response. 

Correct, I checked one more time on the Mein O2 on my mobile phone, it still shows the same thing, “Ein allgemeiner Fehler ist aufgetreten. Bitte versuchen Sie es später noch enimal. (-1)”. 

Kind regards, 

Mingfeng. 

Hello @Mingfeng,

thank you for the information.

Can you also try to log in to Mein o2 on a notebook/ laptop instead?
Just to check if the log in in general is able for you.

Kind regards
Jessica

@o2_Jessica 

Oh, @SethVanDoom, It slipped my mind with the time difference between yesterday and today. Thank you for your attention.

Okay, I have just checked and discovered that your phone number belongs to a prepaid card.
I also have the following information, which you can find here:

I'll translate this into English:

We have just been informed that it is currently not possible to log into My o2 (portal and app).

Time of disruption: 03 March, approx. 10:00 a.m.
(...)
The good news: it is not related to you or your contract, trying other browsers, deleting cookies or similar is not necessary.

We are working on a fix as soon as possible and will let you know here about the status.

Note: This also affects the login to our community.

(...)

Update 19:15: The maintenance work could not be completed at 19:00 and is still ongoing. My o2" is still not available for prepaid users; we will keep you updated here.

Unfortunately, I have to ask you for a little patience. We are working on getting the login working again as soon as possible.

Kind regards
Jessica

Thank you all, 

@o2_Jessica @SethVanDoom 

The Mein O2 app seems to recover automatically, and I can log in today. 

The problem resolves itself.

Thank you very much, 

Kind regards, 

Mingfeng

Hello @Mingfeng,

I am really happy to read that!

Good that it all works again.

If you have any further questions or anything do not hesitate to contact us here in the community.

And if you’re looking for some further help in English I can recommend you our English FAQ section which you can find here:

Kind regards + have a nice weekend
Jessica