fix: Update e-invoicing How-To guide

docs/howto/account-billing/e-invoice.md

@@ -3,11 +3,15 @@
 Electronic invoicing (*e-invoicing*) is available to select accounts.
 More specifically, you have the option of e-invoicing if all three of the following conditions are met:
 
-* the country in the customer contract is set to _Sweden_ (that is the country in the account owner data, not the country in the billing data),
-* you have provided a company name,
+* The country in the customer contract is set to _Sweden_ (that is the country in the account owner data, not the country in the billing data),
+* you have provided a company name, and
 * you have provided a Swedish [_organisationsnummer_](https://www.bolagsverket.se/foretag/organisationsnummer.1207.html) (link in Swedish).
 
-If you are eligible for e-invoicing and wish to activate it, in the _Account settings_ vertical pane go to the _Invoice settings_ section and click the _Request form_ link.
+If you are eligible for e-invoicing and wish to activate it, navigate to the [{{gui}}](https://{{gui_domain}}) start page and log into your {{brand}} account.
+
+Make sure the vertical pane at the left-hand side of the {{gui}} is expanded.
+Click on _Settings_, then on _Manage Invoice Settings_.
+In the central pane of the {{gui}}, titled *Invoice Settings*, be sure to have the *Settings* tab open, and then click on the green _Request form_ button.
 
 ![Request e-invoice](assets/swe-einv-01.png)
 
@@ -20,7 +24,8 @@ Choose one of the available providers for your invoicing application.
 
 ![Available invoicing providers](assets/swe-einv-03.png)
 
-If none of the available providers is suitable for your invoicing application, select _Other_.
 Finally, click the green _Send request_ button.
 
 ![Submit request for new invoicing provider](assets/swe-einv-04.png)
+
+Please note that if your provider is not on the list, we cannot provide e-invoicing.