i use google photos, if delete some pics in gallery on phone i need to go to Gphotos to delete them also. So yes, if you delete them on phone they will stay on gphotos, that is the meaning of it. But be carefull as if you delete them in Gphotos they will be also deleted from your phone :)

Why you restart phone multiple times? Last time I did it with ui6 update that is all.

Here in Poland comes without it, and as I read here also in UK. I put on mine samsung official screen protector and it is great. After 6 months still rock solid.

Well I just log in to my secure folder and not seeing it again… It is good that it reminds me to unlock it after restart as I would forget about it.