How to edit routes on iPhone

I’ve always used my Mac so far for much planning...

Now trying on the phone (which will be all I have on LEJOG to use!)

Struggling to be able to drag routes, or even reverse them (local circular for this weekend)

What is the preferred browser, & how DO you click on a route to drag a point like I can on a computer?

Doesn’t work with Brave or Safari

Thx

Just a mapping curiosity?

Looking closer at planning my LEJoG (turned from a 'gentle LEJoG' into a 'Pressured PandemicPedal' owing to the May Govt timelines.....need to get more into the detail!

I came across this section:

I know the area a little, & wonder why the default choice doesn't hop left across the river in Dent to then follow cycle path 68.
  
I know it isn't exactly a busy city (!), but I would expect more vans/campers/caravans (traffic in general!) on the road north of the river. 

Any thoughts on the hidden logic?