Question re am API platform

Earlier this year I created a btc wallet in api-trade.org. Under the tutelage of someone who was helping me learn. Anywho, I became uninterested secondary to the price and bailed on the process shortly thereafter. My wallet with that platform lay dormant. I recently decided to transfer the btc to my wife’s ledger and it appears that the platform has evaporated. It doesn’t appear to exist when I try to open it on the web. I am unable to recover my wallet thusly. Does anyone have any info re what may have happened here ?