Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Feb. 28, 2019	May 31, 2018
Current assets
Cash and cash equivalents	$ 2,287,965	$ 1,390,258
Accounts receivable, net	28,012	9,815
Marketable equity securities	927,443	1,230,754
Inventories	152,283	130,679
Due from related party	0	87,379
Other current assets	1,092,183	331,628
Total current assets	4,487,886	3,180,513
Non-current assets
Long-term investments	175,000	250,000
Property and equipment, net	113,118	65,250
Website development, net	166,155	104,278
Other assets	50,230	76,271
Total non-current assets	504,503	495,799
Total assets	4,992,389	3,676,312
Current liabilities
Accounts payable	250,683	359,597
Short-term notes	4,311,114	1,058,084
Deferred revenue, current	746,811	787,557
Other current liabilities	495,426	430,538
Total current liabilities	5,804,034	2,635,776
Non-current liabilities
Long-term deferred revenue	133,218	114,875
Total Non-current Liabilities	133,218	114,875
Total liabilities	5,937,252	2,750,651
Commitments and Contingencies (Note 11)
Shareholders' equity
Common stock $0.001 par value 80,000,000 authorized 41,006,497 and 29,520,560 were issued and outstanding February 28, 2019 and May 31, 2018, respectively		29,522
Additional paid-in capital		36,651,070
Accumulated deficit		(35,268,062)
Accumulated other comprehensive income (loss)		(495,186)
Total Shareholders' equity		925,661
Total liabilities and shareholders' equity		3,676,312
Preferred Stock Series 2012 [Member]
Shareholders' equity
Preferred stock, $0.001 par value 20,000,000 authorized	445	445
Preferred Stock Series A-2014 [Member]
Shareholders' equity
Preferred stock, $0.001 par value 20,000,000 authorized	356	606
Preferred Stock Series C-2016 [Member]
Shareholders' equity
Preferred stock, $0.001 par value 20,000,000 authorized	363	623
Preferred Stock Series D-2017 [Member]
Shareholders' equity
Preferred stock, $0.001 par value 20,000,000 authorized	$ 6,572	$ 6,643