Your trading account was used in the past for subscribing to another signal, you can't publish it as a new signal now.
Use a new trading account.
When are you going to fix the visual bug with the rectangles? that when you mark a rectangle from a certain date to another and change the time frame and when you zoom in, the rectangles disappear
Make sure -
Where can I see my purchases? https://www.mql5.com/en/forum/9950/page70#comment_2564931
How to Install an Earlier Purchased Application https://www.metatrader5.com/en/terminal/help/market/market_buy
I got a new MT4 account from my broker a few hours ago.
I tried to register my new account with mql but received the same message as the attached file.
I'm waiting for you to solve the problem.
You can't use as a signal a trading account previously used to subscribe to a signal or publish one.
I have never used this account before.
I got this account newly issued by the broker a few hours ago.
Who used this account in the past?
I've checked the history of this account and I can't find any history at all.
If this account had previously been registered as a signal in mql, it would now be an inactive account.
You can delete it so I can register it again.
Check your trading account's account number, broker server and investor password carefully and try again.
Something must be wrong, otherwise you wouldn't get this warning message.
I tried 10 more times.
All the information is accurate, but the same message continues to appear.
"Specified account already being used as a sign"
My MT4 account ID is 70027519.
It appears that there is an old signal that has been deactivated from your database.
I want you to help me.
Use another trading account.
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