Many thanks, slow Speed Dial problem solved!

@burnout426: Thank you for the reply, and sorry, I forgot to say that I'm working under Win 7 Pro.
Chrome, Firefox, MS Explorer run correctly the link, though, then the problem doesn't seem to be my OS, but probably Opera towards Win 7.

Working under this release and NOD32 antivirus, I got an alert message saying that NOD32 had found a potentially undesirable application (JS/ExAds.A) when Opera tried to access a website (s.optnx.com), asking whether I wanted to block the access or not.
I blocked the access, but the message repeatedly proposed the same warning, and I shut down Opera.
Now I'm working receiving sometimes the same message that I ignore, but I deem it necessary to notify you of the problem in order to know what I have to do for continuing my navigtion without any safety problem to my computer.
Many thanks for your kind response.

@burnout426: Thank you for the reply, and sorry, I forgot to say that I'm working under Win 7 Pro.
Chrome, Firefox, MS Explorer run correctly the link, though, then the problem doesn't seem to be my OS, but probably Opera towards Win 7.

Look at this link:
https://www.dagospia.com/rubrica-29/cronache/ldquo-basta-cazzate-rdquo-ndash-cacciari-massimo-gruber-234566.htm
and try to start the video: it doesn't run at all, always waiting...
But if I access the site with Chrome, it runs perfectly.

@leocg: Yes, you're right: I downloaded and installed Opera Developer and it works just like Chrome, that is, displaying a flash of the page, then suddenly disappearing and after a while presenting the page correctly.
I cannot understand why, but maybe I'll currently use Developer, waiting for better times...
Thank you for the suggestion.

@chas4: Thank you, I tried just now but unfortunately it doesn't change anything.
Following a suggestion by "leocg", I installed Opera Developer and there it works fine, as it works fine with IE, Firefox, Chrome and Maxthon. Only Opera does'nt perform correctly

New release, old issue...
It's my third post about the same problem.
If I try to open this URL: https://www.costacrociere.it/costa-club.html the reply is a blank page.
Maybe something goes wrong by me, could anyone try and report how it works by him?
Many thanks everybody.

On previous release 65.0.3467.78 I posted the following comment:
"""I tried today to open this URL:
https://www.costacrociere.it/login.html
and I was answered with a blank page (after a very momentary shadow of login page).
It works well on Chrome 79.0.3945.88 and any other browser I have on my notebook under Win 7 Pro. (MS Internet Explorer, Firefox, Maxthon), and it worked well also with previous Opera releases."""

I see that the problem remains still unfixed in the present release.
Couldn't you gently pay your attention to this issue?

I tried today to open this URL:
https://www.costacrociere.it/login.html
and I was answered with a blank page (after a very momentary shadow of login page).
It works well on Chrome 79.0.3945.88 and any other browser I have on my notebook under Win 7 Pro. (MS Internet Explorer, Firefox, Maxthon), and it worked well also with previous Opera releases.

Sorry, I found a new issue... if I try to open this page:
https://www.costacrociere.it/login.html
I obtain a blank page... (it doesn't happen with Chrome a/o Explorer).

Many thanks, slow Speed Dial problem solved!