PROPERTY AND EQUIPMENT - Net of accumulated depreciation (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,397,672	$ 5,663,677
Less accumulated depreciation	(1,959,738)	(1,631,773)
Property and equipment, net	2,437,934	4,031,904
Tablets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,064,001	5,314,005
Office furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 333,671	$ 349,672