Unable to equip a skin I owned in OW1

I had Lifeguard Pharah in OW1, but after Aviator came out I’ve pretty much had that one equipped since. When OW2 launched I noticed Lifeguard wasnt showing up unless I filtered her skins to Summer Games. I thought maybe it was a bug they needed to fix and forgot about it.
Yesterday I saw someone in game wearing the skin and it jogged my memory, so I checked my hero gallery and it still says unavailable.
I KNOW I owned it in OW1, so not sure why I no longer have access to it. Anything I can do? It’s Summer, I wanna fly around in my swimsuit.