Tried this against several contracts, including the OpenSea one which should be chock full of sales so a good indicator of when it stopped working, and it seems everything stops around this time, nothing since.
For example the following API request returns the last few from on the OpenSea contract:
https://deep-index.moralis.io/api/v2/nft/0x495f947276749Ce646f68AC8c248420045cb7b5e/trades?chain=eth&from_date=2022-04-16T20%3A00%3A00&marketplace=opensea