My question is similar to this one: I am building a gmail add-on and would like to test it on my Android phone's gmail app. Additionally, I have two add-ons installed from the Google Play store -- Asana and Trello. However, none of the add-ons show up on my phone, even when following the advice in the question I linked.
More detail: in a browser on my desktop, all three add-ons show up and function properly. However, in the gmail app on my phone, none of them show up. The answer to the question I linked said 'Open a message and scroll to the bottom and it will appear,' but this advice does not work for me. How else can I make the add-ons show up in the Gmail app? I am using the lastest stable release of Oreo, and I am signed in on my phone with the same Google account as on my computer.
Thanks in advance for the help.