be in a time warp

be stuck in a time warp

To remain unchanged from a time in the past, especially in an antiquated or obsolete way. ("Time warp" is sometimes hyphenated.) This town is so entrenched in its backwards ideals and moral values, like it's stuck in a time warp or something! There's nothing digital in the house—no computers, no smartphones, just a typewriter and a single rotary telephone. Talk about being stuck in a time-warp!
See also: stuck, time, warp

be (stuck) in a ˈtime warp

not having changed at all from a time in the past although everything else has: Her whole house seems to be stuck in a time warp. It’s like something out of the 1950s. OPPOSITE: keep up, move, etc. with the times
See also: time, warp