The database HEROKU_POSTGRESQL_GREEN_URL on Heroku app euruko2013-cfp is approaching its allocated storage capacity.
The database contains 7,595 rows. The Dev plan allows a maximum of 10,000 rows. If the databases exceeds 10,000 rows then INSERT privileges will be revoked, preventing more data from being written. INSERT privileges are automatically reinstated if rows are removed and the database once again complies with the plan limit.
To avoid a disruption to your service, migrate the database to a Basic ($9/month) or Production plan:
I received this email today:
So we need to provision a basic one and migrate the data there using the instructions above. This will cost us ~ $18 and $30.