No, according to the rules of our platform you can link your exchange account only to one Coinmatics account.
If you try to link the same exchange account to more than one Coinmatics account, the system will give you an error. Even if you delete it and all API keys, you cannot add it to other Coinmatics accounts. This is forbidden by the platform.
In addition, we recommend you do not create more than one Coinmatics account.