Fitbit Premium membership not showing when switched over to previous account

[SunsetRunner]

Hello,

I used to have a Charge HR 2, but the screen went dead and was offered an upgrade. At the time I was a bit irritated about it so I decided to go without a watch and see how I'd do. That was a couple years ago and I never bothered to deactivate the account. I decided to get an Inspire since it had the waterlock, and in the summer we kayak, boat and swim a lot so I thought it'd be nice to have that so I can log my exercise in the pool and at the beach. Long story short it came with a year of premium membership. I tried to add it to my old account and it wouldn't sync, so I opened a new account and it worked...for a while anyway. It kept not syncing and I was having trouble with getting readings on my watch and getting it to sync as it was constantly breaking connection so I removed the app, restarted both and opened my old fitbit account. I was able to sync it this time using the Fitbit HR, since 2 was not syncing. Now I can't access my premium membership and none of the old data from these last few weeks is showing and I already deleted the new account. Could someone please help? It's finally syncing well but now even though it shows I have the premium membership in my apple account and it's all up to date It is still telling me Error Code 1000.

[SilviaFitbit]

@SunsetRunner A warm welcome to the Fitbit Community. Thanks for the detailed information shared. 

With the purchase of Fitbit Inspire 2, you receive a 1 year Premium trial, which activates in the account that your Inspire 2 was set up to. In this case, I'd like you to confirm that you're logged into the same account where your Inspire 2 is linked to. This could be double checked by going to your Fitbit app > tap your profile picture and it will show the date that you joined Fitbit. 

Also I'd like to know where you're getting the error code 1000. 

Let me know how it goes.