Hello,
a bug in the source code DIME is resolved in the new version 1.6.9.0
https://github.com/dimecoinproject/dimecoin/issues/3repository here:
https://github.com/coins7ex/dimecoin but exchanges don't accept releases from new developers

.
(changes tested at: 7MaYRJH3Bgj6rpjYTGLjtvh8PRAHRWkoAq 7JCygwB5US2ZEHfCNwFCqo7ba4SpMXJ9LL )
The original developer abandon the project 3 years ago. So it is not possible to wait for the answer from him. Only someone new can fix it.