Q: I was suddenly logged out of my Facebook account on my desktop computer. When I tried to log in again, I received a message that said, "We've detected suspicious activity on your Facebook account and have temporarily locked it as a security precaution." The message said I was probably a victim of phishing (in which an attacker poses as a legitimate company to steal personal data,) and offered to walk me through a security check if I clicked "continue." But when I clicked "continue," nothing happened. Now I can't log in to Facebook via the Chrome or Firefox browsers on my computer, or the Facebook app on my phone. What should I do?

Nathan Bliss, ­ Fort Lauderdale, Fla.

A: The big question is why your Facebook account was locked. The answer could be:

• Facebook thinks (rightly or wrongly) that you violated one of its many rules. For example, there are rules about posting advertising, making "Facebook friends" or not using your real name. (For details, see tinyurl.com/y4aqxox5).

• You may have logged on from several different devices lately, which Facebook might consider an indication that your account had been hacked.

• You may have been a victim of "phishing" if you were misdirected to a phony website that appeared to be Facebook and you logged in there. If that happened, someone else may have used your login credentials to gain access to your account, and Facebook may have detected it.

• The message may not have come from Facebook, but from a hacker. If that's the case, you may have downloaded some malware by clicking "continue."

Here's what you can do:

• Don't click on a link in any message, no matter who it appears to be from.

• Run the free version of the Malwarebytes security program (see tinyurl.com/jsdacdk), then try logging into Facebook.

• Clear your browser's cache and browsing history, then try logging in to Facebook.

• Try logging into Facebook on someone else's computer.

• Go through the Facebook process for regaining access to an account (see tinyurl.com/yysup9pf) or explain your problem to Facebook (see tinyurl.com/y5tq9cmu).

Q: I recently upgraded my iPad to Apple's iOS 13.1.2 operating system, and now the voice-to-text feature of my Yahoo Mail app doesn't work properly (the cursor jumps around.) However, the dictation feature works fine if I use Yahoo Mail via the iPad's mail app. I reloaded the Yahoo Mail app, but it made no difference. Apple and Yahoo blame each other. What should I do?

Dianne Wolf, St. Paul

A: Like all new operating systems, iOS 13.1.2 is encountering some problems. For example, Apple is having iOS problems with its own e-mail app (see tinyurl.com/y3subkpg), as well as with device battery life and data syncing (see tinyurl.com/y4paf89u). Given all that, it's unclear when Apple will fix the bug causing problems in the Yahoo Mail app.

It's also possible that Apple's updates to iOS won't solve the Yahoo Mail app problem, and that Yahoo will then have to rewrite its own app.

In the meantime, I suggest that you keep accessing Yahoo Mail via the iPad's mail app (which, for you at least, seems to be working.)

E-mail tech questions to steve.j.alexander@gmail.com. Include name, city and telephone number.