How do I go about re establishing communications with this girl?

we had been talking on a regular basis at her work which is also our gym so our conversations had been starting to get pretty casual and i felt there was some potential there. but then it had to close due to covid 19 restrictions and its unclear when it can re open

i had tried to reach out to her online and added her on 1 of the social media sites she uses but it didn't really lead anywhere

now i'm unsure how to re establish communications with her? is there some other way to talk to her or a different site / method that is more convenient to her?

do i need to wait until i see her in person again , whenever that may be and try talking to her again , the way i had been before
How do I go about re establishing communications with this girl?
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