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Note 15 – Share Based Awards (Tables)
3 Months Ended
Jul. 31, 2024
Share-Based Payment Arrangement [Abstract]  
[custom:ScheduleOfAssumptionsUsed1TableTextBlock]
    2024    2025 
Exercise Price  $1.151.29   $1.061.12 
Stock price on date of grant   1.201.38    1.061.12 
Risk-free interest rate    4.244.44%   3.474.07% 
Dividend yield            
Expected term (years)   5.245.85    6.00 6.25 
Volatility   191.28199.48%   257.25260.22% 
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
  Shares   Weighted-Average Exercise Price   Weighted-Average Remaining Contractual Term   Aggregate Intrinsic Value
Outstanding as of April 30, 2023     4,784,809     $ 1.88       8.72        74,586   
Granted     2,903,542       1.02                  
Exercised     (3,000 )     0.89                  
Forfeited or expired     (905,417     2.27                  
Outstanding as of April 30, 2024     6,779,934     1.46       8.02        2,762,242   
Granted     627,500       1.15                  
Exercised     (4,000 )     0.72                  
Forfeited or expired     (83,446     1.55                  
Outstanding as of July 31, 2024     7,319,988     1.43       7.54     5,658,470  
Exercisable as of July 31, 2024     4,444,723     $ 1.65       6.57     $ 3,014,807  
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  Shares  Weighted Average Grant-Date Fair Value Per Share
Unvested and outstanding as of April 30, 2023   781,060   $2.44 
Granted   298,643    1.06 
Vested   (485,024)   1.92 
Forfeited   (419,549)   2.09 
Unvested and outstanding as of April 30, 2024   175,130    2.09 
Granted   2,447,599    1.06 
Vested   (420,130)   1.25 
Forfeited       
Unvested and outstanding as of July 31, 2024   2,202,599   $1.11 
Schedule of Deferred Compensation Arrangement with Individual, Share-Based Payments [Table Text Block]
   2024  2023
Research and development  $94,422   $127,417 
Sales and marketing   116,543    165,309 
General and administrative   1,235,073    618,880 
Total  $1,446,038   $911,606