OTP code grouping could be displayed like in most apps.

Most apps (actually all that I remember using) cluster the OTP code in groups of 3 for 6 digit codes and groups of 4 in 8 digit codes.

I think it would be cool if Protecc used that scheme too, it looks odd to have clusters of two.

I tried to modify that myself, but xaml is something I know nothing about.

Start by locating the XAML view that displays Protecc's OTP code and inspect how the digits are currently grouped. Verify the desired presentation for six- and eight-digit codes, then check the app manually with both code lengths to confirm the grouping is consistent.

Written by the indexing model from the issue text.