How to change the landline number in my account?

Hello

Personally, I do not have the option to enter a landline number in my account on the app ..

may be because I don’t have any fixed phone at voo ? 

it’s not very important if your mobile phone is there and correct .
If landline number is well present but incorrect , only an official can change that. 

Hello @Mouser,

Could you add your customer number to your profile so that I may access your file ?

Thank you in advance.