Site Support (down at the bottom of the forums) is the best place to report issues, and it's important to include details like device, browser and operating system. I know Lydia always recommends clearing cookies and cache manually before reporting issues.
Personally I haven't had any issues but I'm on Android. Two things you could try - does Advanced Search work: if you click on Go Advanced and then you don't need to fill all the fields in, just sympathy in the main field, for example.
And because things like sympathy, get well and so on are listed there - if you go to the gallery home page and click on Occasions Galleries at the top, and then look down at the Occasions by Theme, do you get a result if you click on Sympathy there? Because essentially those galleries are simply the results of a search.
Occasions Galleries at Splitcoaststampers
Searching on Splitcoaststampers
