damon
Yes, it crashed on this screen. 
It's my first time using this app. I have tried to reinstall it, but doesn't work.
The crash report. Version=1 EventType=MoAppCrash EventTime=132296656246721692 ReportType=2 Consent=1 UploadTime=132296656255436843 ReportStatus=268435456 ReportIdentifier=04aa8234-d69e-4bfc-b336-3e21ab69e216 IntegratorReportIdentifier=36a5346f-7fd5-4f1b-8c05-2cfd12a91d41 Wow64Host=34404 NsAppName=praid:App OriginalFilename=Nightingale.exe AppSessionGuid=000021c8-0001-0016-31e6-339e1b03d601 TargetAppId=U:43891JeniusApps.NightingaleRESTAPIClient_3.2.9.0_x64__jaj7tphbgjeh8!App TargetAppVer=3.2.9.0_x64_!2020//03//25:05:12:15!0!Nightingale.exe BootId=4294967295 ServiceSplit=1866330529 TargetAsId=3495 UserImpactVector=16 IsFatal=1 EtwNonCollectReason=4 Response.BucketId=f83c4776f144df60e15c65b44b58c403 Response.BucketTable=5 Response.LegacyBucketId=1250986621534782467 Response.type=4 Sig[0].Name=Package Full...
ADDITION: There are some information from Windows Event Viewer Faulting application name: Nightingale.exe, version: 1.0.0.0, time stamp: 0x5e7ae82f Faulting module name: Windows.UI.Xaml.dll, version: 10.0.18362.657, time stamp: 0xda02d3eb Exception code: 0xc000027b...
Device: MacBook Pro 2012 late Windows OS: Windows 10 Enterprise 1909 build 18363.720
BootCamp, but the Windows OS and mac OS not installed on a same SSD drive.
> Does the same thing happen if you use a CollectionVIew? CollectionView has the same problem on iOS, it works well on Android.