Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Details) - Schedule of Stockholders' Equity Note, Warrants or Rights

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STOCKHOLDERS' EQUITY (Details) - Schedule of Stockholders' Equity Note, Warrants or Rights - $ / shares
12 Months Ended
May 31, 2021
May 31, 2023
May 31, 2022
Schedule Of Stockholders Equity Note Warrants Or Rights Abstract      
Warrants outstanding, Number of Shares 13,499,411 1,729,924  
Warrants outstanding, Weighted Average Exercise Price $ 2.12 $ 0.46 $ 1.98
Granted, Number of Shares   20,232,775 874,666
Granted, Weighted Average Exercise Price   $ 0.4 $ 1.65
Exercised, Number of Shares   0 0
Exercised, Weighted Average Exercise Price   $ 0 $ 0
Cancelled / Expired, Number of Shares   (781,250) (12,644,153)
Cancelled / Expired, Weighted Average Exercise Price   $ 0.6 $ 2.09
Warrants outstanding, Number of Shares   21,181,449 1,729,924