I managed to view a list of 9 marriages & order 1 that was correct but didnt have the option of viewing the transcription
Do you mean you can’t see the details of the marriage you ordered?
In general SP doesn’t do transcriptions, they provide the original image. (I say ‘in general’ to cover myself, but I don’t recall ever seeing a transcript on SP. It is always a download of the original.
Regarding a general search. The very first screen allows that.
Previous searches - top of screen under ‘saved items’ but only if you did save it.
Previous purchases are safely stored there too