Restore Privileges and Access to Master User in RDS to use correctly and access database

I was connected to mysql using command line with AWS credentials. I was trying to add some privileges to be able to run a sql script file into the database. I followed some information and run the following query GRANT USAGE ON *.* TO masterusername@'ip' IDENTIFIED BY 'my_secret'; GRANT ALL ON database.* TO masterusername@'ip'; And suddenly I was not able to connect to the database, it's telling me I have no access to such database; My application is running fine but when I try to connect to the db via mysql command line I'm not able to connect. This is a glance to the grants I have but I think I might tried to reset them, but not sure how. SELECT USER(), CURRENT_USER(); information, prior and after the change Before:

+-------------------+------------------+
| USER()            | CURRENT_USER()   |
+-------------------+------------------+
| masterusername@ip | masterusername@% |
+-------------------+------------------+

After:

+----------------------+----------------------+
| USER()               | CURRENT_USER()       |
+----------------------+----------------------+
| masterusername@ip    | masterusername@ip    |
+----------------------+----------------------+

I want to change it back but seems I have no longer privileges cause of the @ip part of the connection I need to restore it to what it was