Yahoo mail app not synchronising properly

[Soleilseleve]

I have tried all suggestions. Reinstalling. Restarting phone etc and several emails are missing from the yahoo app. I fired up my old s9 and all the emails were there. Any ideas as to how to get the app working properly on my s25

[Tourbillon De La Vie]

One off few emails didn't sync or happening all the time

[Soleilseleve]

A few emails are missing randomly interspersed with emails that have synched

[R2wo]

On a Samsung phone, I always use the Samsung Email app.