Quarterly report pursuant to Section 13 or 15(d)

Note 14 - Preferred Stock (Details Narrative)

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Note 14 - Preferred Stock (Details Narrative) - shares
3 Months Ended 9 Months Ended
Oct. 31, 2021
Jul. 31, 2021
Jan. 31, 2021
Jan. 31, 2022
Apr. 30, 2021
Common Stock [Member]          
Class of Stock [Line Items]          
Stock Issued During Period, Shares, Conversion of Convertible Securities 1,321,966 818,333 1,212,118    
Series A Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred Stock, Shares Outstanding       0 158,704
Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred Stock, Shares Outstanding       986,676 1,968,676
[custom:PreferredStockSharesConvertibleIntoCommonStockShares]       822,230