Good quiz, but misspellings on Saint Vincent and the Grenadines, Uruguay, Solomon Islands. Also, "Congo" is commonly acceptable on JetPunk for both Republic of the Congo and Democratic Republic of the Congo. Or at least "DRC" and/or "DR Congo" should be acceptable for the latter.
Swaziland is now called Eswatini.
Also I think that some abbreviations should be accepted, since they are usually accepted on other JetPunk quizes:
CAR - Central African Republic
NZ - New Zealand
DRC - Democratic Republic of the Congo
DR - Dominican republic
DPRK - Democratic People's Republic of Korea (North Korea)
Not minding that, it's a great quiz. Keep up the good work. :)