Value returning as False in openasapp but not in excel

This is my first attempt at an app from spreadsheet in openasapp. I have a dropdown that has 4 possible options (B5). Each option will reference a different table later in the sheet to return the proper value for that option.  The problem is that only one of the dropdown options returns a value ( "320 NEO" ) in the 2 places that I need it to in openasapp even though it works in excel. I can't see anything different about the way that one option is written compared to the others so I am at a loss at how to fix it. Ive tried changing the values at B5 to numbers instead of words to eliminate the "" but that hasnt worked. Maybe it is just written poorly I dont know.

first place I get an error

=IF($B$5=319,MAX(INDEX(L60:O62,MATCH(D5,K60:K62,1),0)),IF($B$5=320,MAX(INDEX(L60:O62,MATCH(D5,K60:K62,1),0)),IF($B$5=321,MAX(INDEX(L60:O62,MATCH(D5,K60:K62,1),0)),IF($B$5="320 NEO",MAX(INDEX(L75:O77,MATCH($D$5,K75:K77,1),0))))))\

second place I get an error

=IF($B$5=319,INDEX($L$51:$T$51,MATCH(B17,$L$50:$T$50,-1)),IF($B$5=320,INDEX($L$55:$V$56,MATCH($C$17,$K$55:$K$56,1),MATCH($B$17,$L$54:$V$54,-1)),IF($B$5=321,INDEX($L$66:$T$66,MATCH(B17,$L$65:$T$65,-1)),IF($B$5="320 NEO",INDEX($L$70:$T$71,MATCH($C$17,$K$70:$K$71,1),MATCH($B$17,$L$69:$T$69,-1)),0))))