You use to have a remix button in top left corner of your chosen image, has this now been removed only to be replace with edit selection.
SOLVED - I've now found it .... Show Similar (remix button) is listed under Edit button.
Even if you have already found a solution for yourself, here are a few more tips.
There is no "remix" section on Firefly. That would only be possible with Lightroom. In addition to "Show similar", there is also "use as reference" and "Generative Fill" to create images similar to the one already selected. Since Firefly is still in beta at the moment, this may change a bit. Have fun trying.
Many thanks for the feedback, I think I had a glitch of forgetfulness this morning ..... LOL 😉
Today I mainly have been playing around with 'Generative Fill' and loving the NEW 'Pan Tool' which helps alot with creation, my only problem still is struggling with 'fill brush' and its output sizing - I sometimes wish there is a way to zoom in to fit or resize handles before final except.
Otherwise I LOVE FIREFLY! it reminds me of my imagination.
Have a good day and enjoy!