There are members you can personal message to them. Look under members that have awards etc. If they don't know they will send it to someone that does.
P.S. when you make a title be a little more specific so they can find you fast
The best place to ask might be in either your own grow journal or in the FAQ section. That said, some more information would be helpful.
Look below at the "Helpful Links" then click on How to ask for grow support and post that info here. Later on follow the how to make a grow journal link, make one, and place a link to it in your signature (you have to go to your sig page for that and copy/paste/save the link.
Look forward to more info and we'll know better who might best be able to help.
That looks like it might be bug damage mate. Have a good look about them for any signs of movement. If you've got a magnifier then use it, otherwise download one for your phone. Theyre pretty hard to see with the naked eye.