Just got tickets yay!
Try this link with the Reading and Leeds Fest presale, it worked for us just now...
http://www.ticketmaster.co.uk/event/1F0052E3CD9FD64D?did=rlpre&camefrom=CFC_MU1990_RANDL_NW227&utm_source=Festival+Republic+Audience&utm_campaign=aa5c308efd-R%26L+050717+%28Muse+Presale+no.2%29&utm_medium=email&utm_term=0_317cda3fe5-aa5c308efd-54516685