License: GPL is incompatible with extra restrictions imposed by clause 3 in sources

https://github.com/vgiv/yo/blob/ade3241a4e078bca1e070541ca9a20699aa43bae/src/RegExpr.pas has this copyright clause:

{
     TRegExpr class library
     Delphi Regular Expressions

 Copyright (c) 1999-2004 Andrey V. Sorokin, St.Petersburg, Russia

 You may use this software in any kind of development,
 including comercial, redistribute, and modify it freely,
 under the following restrictions :
 1. This software is provided as it is, without any kind of
    warranty given. Use it at Your own risk.The author is not
    responsible for any consequences of use of this software.
 2. The origin of this software may not be mispresented, You
    must not claim that You wrote the original software. If
    You use this software in any kind of product, it would be
    appreciated that there in a information box, or in the
    documentation would be an acknowledgement like

     Partial Copyright (c) 2004 Andrey V. Sorokin
                                http://RegExpStudio.com
                                mailto:anso@mail.ru

 3. You may not have any income from distributing this source
    (or altered version of it) to other developers. When You
    use this product in a comercial package, the source may
    not be charged seperatly.
 4. Altered versions must be plainly marked as such, and must
    not be misrepresented as being the original software.
 5. RegExp Studio application and all the visual components as 
    well as documentation is not part of the TRegExpr library 
    and is not free for usage.

                                    mailto:anso@mail.ru
                                    http://RegExpStudio.com
                                    http://anso.da.ru/
}

The clause 3 puts additional restrictions over the BSD-like license of clauses 1 and 2. The LICENSE in the project root tells that the project is GPLv3-licensed. These two facts are mutually exclusive - so what is the actual project license?

vgiv / yo

License: GPL is incompatible with extra restrictions imposed by clause 3 in sources #5