First issue - rebid-1♥ shows 3-card plus? why not 4-card plus? Such a inaccurate description is very easy to cause many serious confusion, now here I would better take two examples.
Hand-1
See 1♥ and 2♥, both of them show only 3-card plus, so got a very bad result.
Hand-2
Why not rebid 1♥ in the similar shape hand? God knows its reason.
Second issue - Both of 1♠ and 2♥ say there are 6+♠ and 4+♥.
Third issue- See the definition of 3♦, how many ♦ are there ? so it is a incomplete definition.
Fourth issue - 3♥ says there are 5+♥ and 6+♠.