Your name, phone number, bio and region live on your personal profile, separate from your store's settings and separate from your contacts.
To open your profile
Click your name at the bottom of the left sidebar. Your Profile opens.
What you can change here
Name: edit the field directly.
Phone: click Add phone, choose your country code and enter the number. We send a verification code by SMS, and the number is saved once you enter it.
Bio and Region: edit directly.
Your email address is shown here but cannot be changed from this screen. Contact support if you need it changed.
There is no language setting here: the app follows your browser's language, so to use Spoks in English, set English as your browser's preferred language.
This is not your SMS sender number
The number your store sends marketing SMS from is assigned during SMS registration and is a different thing entirely, see How to send SMS. It is also not a contact's phone number, which you edit on the contact record.