Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenue, net	$ 8,396	$ 2,566
Costs and operating expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	7,739	3,583
Technology and development	33,893	26,265
Sales and marketing	20,569	22,920
General and administrative	62,104	104,144
Depreciation and amortization	4,037	4,411
Total costs and operating expenses	128,342	161,323
Loss from operations	(119,946)	(158,757)
Interest expense	(5,249)	(9,597)
Other expense, net	(33,645)	(49,067)
Loss before taxation	(158,840)	(217,421)
Income tax expense	(413)	(357)
Net loss	(159,253)	(217,778)
Other comprehensive income:
Unrealized gain on foreign currency translation	12,607	2,541
Total comprehensive loss	$ (146,646)	$ (215,237)
Net loss per common share - basic (in dollars per share)	$ (1.58)	$ (5.00)
Net loss per common share - diluted (in dollars per share)	$ (1.58)	$ (5.00)
Weighted-average basic common shares (in shares)	100,795,106	43,553,504
Weighted-average diluted common shares (in shares)	100,795,106	43,553,504