I have specific websites that browser sees as unencrypted and then blocks my access. Some sites that I successfully navigate for the first time, but am blocked by this same feature when returning later. I have Avira Premium in good working order.

Question

I can reach any of the sites thus afflicted by using a proxy server, confirming that the sites are NOT the problem. Therefore no reason to provide a website below... it occurs on numerous websites (which can all be reached with proxy server) while the majority of sites I go to are no problem.

Answer 1

Alright, so last night, I couldn't sleep. Sunrises can be a little slow.
Received a phone call this morning, did the song and dance, and she said I would get a new card within 3-5 days. When I hung up, because I was so rattled about this, I didn't bother to recheck the phone number to make sure it was legit! She had my personal info, but she asked me my email as well (not username or password, but...)!
I have 2-step verification on my email account, so I'm not concerned that (if the call was not legit) that they would go much further. Changed all of my passwords last night as well. And no SSN info was asked, so there's that. She also made me aware of two other previous pending charges that have been there for a few days (which are legit, I had been tracking them), so I feel slightly more sure that it was legit.
Checked back at the email and webpage provided to look at the security certificate, and it checks out fine. Nevertheless, I called at the back of my card because, by then, I was already nearly crying over my oversight--anxiety issues and a lack of sleep will do that to you, heh...
This CSR tells me that, indeed, my card had been compromised, and confirmed that the account had been blocked and that they were not overnighting the card, that it would arrive in 3-5 days (which also eases me, as the woman said they were sending it via regular mail and gave the same timeframe).
Regardless, I'm the world's biggest worrywart, so I requested a fraud alert on my CRs. I don't know what to do with myself now. What else can I do to protect myself? Had a good cry, I think I'll try and get some sleep, finally...
Thanks for warning me about the passwords, though, I hadn't thought about it until some of you said so!