Re:Zero has been licensed by Yen Press officially in English and currently (27/07/2017) they have done both volumes of Chapter 1: A Day in the Capital and the first volume of Chapter 2: A Week at the Mansion
according wikipedia the next volume of Chapter 2 of the Manga is expected to be released on August 22, 2017 with Chapter 2 being fully done by the end of the year while Chapter 3: Truth of Zero is expected to start being released at the end of October, 2017 with Volume 3 of it expected in April, 2018.
as you can see from the link and screenshot the japanese release of Volume 5 of Chapter 3 was in March 2017 but previous volumes have been between a few months apart. however it is based off the Light Novel which is still ongoing with the last release being Volume 13 released in June 2017 (and also licensed by Yen Press and have planned up to Volume 5 currently (27/07/2017))
So no, there doesn't seem to be a hiatus but rather Yen Press taking their time, probably a good thing because you wouldn't want this stuff rushed