All Waypoints Vanish when I import my old or new CSV's into Litchi

For about 2 weeks whether they are newly created CSV’s or prior ones I’ve created none of the waypoints appear. I’ve created the flight plans with DJIFlightPlanner. I’ve used that program for three years without any issues. I recently spent 2 months in Ireland flying without a hitch but returning from there none of my CSV’s have waypoints once I’ve imported them into Litchi…the Mavic 2 Pro flies the mission but no photos are taken. I usually have between 200 to 500 photos within each mission. This has happened with different Mavic 2 Pros and also when I’m using an Android Smart Controller or an iPad and regular controller which came with the Mavic 2 Pro. The mission appears (the lines) and flys the mission but it no longer displays the camera points or shoots them on the mission once it’s imported to Litchi. Is there a way I can reload my Litchi APP?

You can’t import CSV files in Litchi, only in the Litchi Hub.
Litchi is the app you install on your flying device.

Most likely those missions have time-based interval set.
According to the DJIFlightPLanner Tutorial page 9, such a mission does not have a waypoint for each photo and you have to manually start taking photos at the first waypoint.

Yes, uninstall then reinstall the app on your flying device.
However I’m not convinced this is going to solve your “problem”, I think your confusing Time-based and Position-based flight plans.

Tutorial:

Thanks for your response, yes I should have stated Litchi Hub not Litchi.

I’ll take a look at the manual you linked. I’ve flown well over 100 missions with
the settings I’ve been using for 3 years…I’ve never had to take a photo manually
with excellent results every time.

Thanks again for your suggestions and information I’ll reload software since repeatedly flying the same missions has always worked perfectly and then suddenly everything I import shows up with no camera points just the lines of the mission.

I’ll post again once I check out your suggestions. Thanks again for your prompt response.

A million thanks…it was indeed what you suspected, I had switched it to
“Time Based” from “Position Based” upon switching it back to “Position”
all is well.

Thanks so much I guess I can now get some sleep and do my next missions on
Tuesday.