In the new update version, Seaiq has dropped support for CM93 charts
. They said they received a "request" from CMAP to drop support.
If you use Seaiq and want to retain this support, you should be sure to not update it. You may need to turn off automatic updates. You might also consider making and storing a backup in case you lose the program, change tablets, or accidentally get upgraded.
This is really bad news - Seaiq was the best of the bunch out there (personal opinion, of course) and I considered it OCPN for ipad
. In fact, it does several things better and has features not found on OCPN.