Why can't my client open the Jira link I sent them?
ClientLens for JiraA Jira link only works for someone with an Atlassian account, access to your site, and browse permission on that project. External people have none of those by default, so they hit a login wall or a 'you don't have permission' error. The options are to license them, use guest access on a paid plan, or send the information rather than the link.