A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi Emma,
Thanks for posting back.
I am glad to know it works well now. It seems to be a glitch. For your screenshots, I have already masked all private information (tenant name, domain, and site name) inside them. If you still want to delete them, please let me know.
Regarding your second query, I'm sorry I didn't make it clear. For the information in Step 2 (my first reply), you need to check them in the browser, not in the SharePoint app.
When you try to share a SharePoint folder in the browser, you can click the Gear icon in the Share dialog box to set the link type. Later, you will be able to check the default link type and change the link type.
To check the existing link, you can view the following screenshots.
To add external users as guest users, note that only the administrator of your organization can perform this action. End users can't perform the action.
Appreciate your understanding and patience.
Sincerely,
George | Microsoft Community Moderator