A. Pause just a hair longer between taps. By design, double-tapping in the Detail screen toggles all checkboxes on or off.
A. Sorry about that! This was fixed in version 4.0.1.
A. Almost certainly. See here for instructions on how to install an existing plan. If your favorite plan isn't listed, and is freely distributable for non-commercial use, please send a copy or a link to support, and I will be happy to format it for use with ReadingPlan and post it for download.
A. By default, ReadingPlan open web links in its own internal web viewer. If you would prefer to have a web site open in Safari instead, edit its link by replacing 'http' with 'safari'. Instructions for editing bible links are here.
A. If you're more or less up-to-date on your plan, the easiest thing to do is to set the start date and use the Mark Read to Today option in Settings. On the other hand, if you're significantly ahead or behind, or have been reading "off-plan", the easiest thing to do is to 'sync' your new device with your old one, using the Sync/Share Progress option. While you still have your old device, turn on syncing; ReadingPlan will upload and store your progress. Then, with your new device, turn on syncing; ReadingPlan will download your progress. (If you only have a single device, you can turn syncing off at this point.) Instructions for setting up syncing are here.
A. Yes, just select another plan in Settings. If you want to track progress in multiple copies of the same plan, rename the plan and download another copy. See here for details.