Is it true EIN refused them? Why?
Yes. While in the holding SE of EHRD, after their go-around there, they requested EHEH (EIN) as alternate. This was refused by Eindhoven ATC (the reason why, wasn't given to TRA3K, BTW)
Later, it emerged that there is a NOTAM in force saying that EHEH is unavailable as alternate for civil traffic, except (medical) emergencies.
M0681/15 - EINDHOVEN AIRPORT (CIVIL) NOT AVBL AS ALTN, EXCEPT
(MEDICAL) EMERGENCIES. 08 APR 00:00 2015 UNTIL 31 DEC 23:00 2015.
CREATED: 07 APR 12:51 2015
At the moment of their request to divert to EHEH, TRA3K hadn't declared an emergency.
The NOTAM was put in place for noise mitigation purposes in the Eindhoven area.
News item on this (Dutch):
http://nos.nl/artikel/2049294-stormt...eindhoven.html