Less than a week ago, I wrote a post aboutfor Google. Less than a week ago, I wrote a post for Google.

Keep and stated that I doidn't trust LangCorrect anymore, since your writing willould be erased irretrievably if you accidentally refreshed the page. Keep and stated that I didn't trust LangCorrect anymore, since your writing would be erased irretrievably if you accidentally refreshed the page.

Either way makes sense, but past tense might work better here.

Keep andwhich stated that I don't trust LangCorrect anymore, since your writing will be erased irretrievably if you accidentally refresh the page. Keep which stated that I don't trust LangCorrect anymore, since your writing will be erased irretrievably if you accidentally refresh the page.

"Which" provides a direct modification to the "post" mentioned in the previous clause, whereas "and" suggests an additional separate action.

Keep and I stated that I don't trust LangCorrect anymore, since your writing will be erased irretrievably if you accidentally refresh the page. I stated that I don't trust LangCorrect anymore, since your writing will be erased irretrievably if you accidentally refresh the page.

Yesterday, there was thisan update which, from now on, automatically saves all your drafts. Yesterday, there was an update which automatically saves all your drafts.

I might have to eat my words!should be careful what I say. I should be careful what I say.