Got the shoes last February (2018), since then I used them in 2 treks and some street walking - maximum of 100 miles, and the soles began separating.
This is not "wear and tear" - the boots' manufacturing date (appears on the inner side of the box) is 16.06.2012, over 6 years ago.
Fixing them won't help since the glue is fu**ed up due to it's age.
Massdrop won't help so far, manufacturer won't answer the mail.
150$ gone to waste, feeling scammed.
Watch for the date of the products you receive.