Hello,
I’m trying to duplicate your issues, but I’m having a hard time replicating the yearly recurrence problem. Are you sure that when you open the event series you set the Pattern to 2 or more years under the Recurrence tab?
As for the first and last day of the month recurrences, you can set the Monthly recurrence to 1 day of month, but it is true that the option for last day is missing. I’ll point this out to our team so we can hopefully add this in future releases.