Please read this important note from the product team pertaining to enablement of Multi-Factor Authentication with SMS (texting).

When using Multi-Factor Authentication with SMS (texting), the DocuShare Go implementation needs the country code specified and does not allow the ‘+’ symbol.  

For example,  4912345678910.   In the example, 49 is the country code for Germany. 

1 is the country code for USA/Canada. 

No spaces are allowed in the phone number.