My Lunar Revel shop rerolled?

So, I had my eye on Battle Regalia Poppy. She was a measly 30% off, but that's still only 292 rp, so I thought why not. I went into my champions tab to see what the original price of the skin was, but when I went back to the lunar revel shop, she was gone and it was the unrerolled icon (the thing you click on to show your champion). When I clicked on it, it showed Scarlet Hammer Poppy, who is way too much for me to afford. Is this a common bug, and is there any way to get back my old champion in the shop? Unfortunately, I have no proof that I had battle regalia poppy in the shop, so I didn't really want to send a support ticket without proof.