Thank you for the error information. As you might notice I once again removed the personal email information you posted, I should have reminded you to remove this information from the pasted Error data.
Okay looking over the information it is clear that you're running on very old versions for all aspects of POP Peeper which not only includes the POP Peeper application itself but your plugins (i.e. Webmail, SSL, IMAP etc.) as well, which can be problematic regarding both of the errors you're getting. For example, the 1st error is most likely related to the very old Webmail plugin you're using and as I've mentioned version 3 Webmail is no longer supported. To avoid having to use the Webmail plugin you have the option to switch to IMAP for example which will likely solve at least part of your problems.
In version 4 all the IMAP settings are automated so all that has to be done is change the "Server type" to IMAP and all other required settings are set for you automatically.
In version 3 these automated settings are not available. So if you still want to stay with version 3 and therefore try IMAP for these two accounts as suggested then to help out if you look in PP FAQ for setting Yahoo to IMAP you will see the full setup as posted below under Server Settings, SEE LINK HERE:
CLICK ON Yahoo: IMAP / SMTP
After clicking on "Yahoo: IMAP / SMTP" you will find the following:
Note: Yahoo requires an SSL connection, and you must install the SSL plugin if it's not already installed
Incoming Mail Settings:
Login Name: Full email address
Server Type: IMAP
Server: imap.mail.yahoo.com
SSL (TLS/SSL is required)
Port: 993 (if using TLS: 143)
Idle: optional
Send Mail Settings:
Reply Option: SMTP
Server: smtp.mail.yahoo.com
SSL required
Port: 465
Server Requires Authentication: Enabled
Changing to the IMAP protocol might address your problems, most specifically the first listed error (that said, I can't really be sure because you have an older version of SSL which to my knowledge is also no longer supported in version 3). If issues persist however then I would suggest you consider upgrading to the current v4.
Btw, in regards to your 2nd error; for another forum discussion possibly related to your issue,
CLICK HERE.
It's your choice of course, if you would prefer to stay with version 3 for now then you are welcome to try these possible solutions or you can always upgrade to version 4.
Keep us posted on how you are doing on this.