Physics GRE Discussion Forums

I was Waitlisted since early April in one of the US schools for fall 2020 and I was told i will hear back on or before April 15th which never came,they were completely silent . In the month of May my POI contacted me citing Pandemic issues and asking if i am still interested in the PhD so that he can schedule a follow-up interview which i accepted but also never came(he failed to get back to me after i confirmed continued interest).

Should i still contact him asking for any latest info or do i have any hope at this time ?...Should i ask if Spring admit is feasible since the school grants Spring admit only if a student has a willing supervisor for an RA role...I am an International student