Can't setup sync. Can't confirm the deletion of my "old" sync acct. Can't create a new sync account without registering YET ANOTHER e-mail addy. (e-mail addy's (2) "already in use") Here's a copy of my (third) request for help @Firefox Help/sync: approx. 1 month ago received "server error" message syncing a new device (VM)...advice was to try later..after 3 days worth of "trying later" & same error ocurring I decided to delete my sync acct & start over. BAD MOVE.
When trying to delete the account I get this really fv#$ing stupid "cutesy" message from Mozilla (screenshot): I AM NOT AMUSED. 
Trying to create a new account receives "already in use" I AM NOT AMUSED II

Clearing sync data "claims" successfully cleared. (How can that be, if the "dinosaur is off the treadmill" to begin with?) AGAIN I AM NOT AMUSED
A request to increase quota reveals 0.0 k stored:
At this point (MORE THAN a month later) in case you hadn't noticed, I am clearly NOT AMUSED, not to mention being sans the ability to sync my devices. Next step is to dump Firefox, albeit reluctantly, for Chrome, or some other browser. I simply CANNOT continue to use ANY browser without this vital function, and the status of my "missing" previously stored sync data being so flippantly described BY YOU as "off the treadmill" is causing me MAJOR grief...had to reset HUNDREDS passwords, etc... has left me...you guessed it...NOT AMUSED.
Please advise ASAP.
TYVM. I like Chrome, but the lack of an effective ad-blocker for Chrome (Blasphemy!) has stopped me previously.
I haven't "played" much with Opera...thoughts?