E-mails not being sent

Hi!

Since the update no e-mails are being sent by woocommerce for me or for customer.

I did everything I found on the internet:

– I removed all my custom templates
– I used an smtp wp mail plugin
– I checked with an e-mail log, and no e-mails show up
– I changed the orders to processing or complete but nothing,
– all the e-mails are checked and enabled.

What can be done?

Thanks for your help in advance!
p.s: I use https for my website but on woocommerce system status the SSL is not detected