For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
After reaching hardmode, you can choose the type of the world's evil when generating new worlds. If you have already reached hardmode, just load any pre-existing hardmode world and it will activate this feature.
My wallet was so prepared for this moment. I have already purchased it when I got the email notification from Bandcamp.
It's a shame that we don't get to have console soundtracks due to copyrighted by different company, but we'll have to live to that regardless.
At least I can finally play...