So I put some batteries in mine, turned it on off camera. Front curtain, TTL, ISO 100, F4. All distance bars light, f blinks, zoom changes focal length to preset focal lengths, 1 per press, Sel toggles between F and ISO.
Check the hot shoe contacts, clean with alcohol, clean contacts on the flash. With the shoe lock snug against the flash push the flash into the camera shoe with a solid push. A gentle push may not seat the flash into the shoe properly.
With the tilt at straight up the distance bars are not present and do not return until the head is at 90° with the lock fully seated in the lock position.
On my flash the distance bars with the head lock not fully seated in the lock position flashed until the lock seated once but will not repeat.
Operate the head up/down several times and left right several times. If it does not correct get some
https://www.homedepot.com/p/CRC-11-oz-QD-Electronic-Cleaner-05103/205021975 QD Contact Cleaner and flush the slip rings in the head movement with the flash off camera and the batteries removed.