Many thanks. I'm sorry i think i dont understand. What i understand from all of your threads is: for sure i can enter from the us border (still i had no explanation why) to canada and wait two years to renew. you add that still in the meanwhile i can be lose my status and get reported outside canada. Please correct me. In addition, i thought that i could enter from the border WITHOUT any appeal just like schengen in europe and get back with 24-9 months to renew. Thanks again.
You have misunderstood.
If you enter via the land border, the officer will evaluate your situation and may do one of several things, basically ranging from reporting you for being out of compliance with the residency obligation (this is called a 44(1) report, more later) to waving you through with no formal action (perhaps a note to file and/or a warning). [There are a few potential wrinkles in here which can be important but not essential to know at this point.]
In all cases, you WILL be admitted to Canada, where you are allowed to remain and work - in the case of the 44(1) report, temporarily/conditionally.
If you are allowed in WITHOUT the formal report: you are in Canada legally and you can work, live, etc. Once you get the 730 days to be in compliance again, you can apply for a new PR card. In the interim, you basically should not leave the country (you can, of course, but on return you risk getting the 44(1) report which can lead to losing PR status).
A warning that in the interim you can encounter some difficulties in terms of getting things like health care coverage (to some degree depends on province). Work is legal, you are still a PR. For many, the (effective) limitation on travel and other issues make this approach more difficult than it sounds.
44(1) report:
-the number refers to part of the IRP act;
-it formally starts the process of revoking your PR status;*
-it can be appealed (must appeal within 30 or 60 days, I forget which);
-appeal process can take quite a while, eg 6-12 months.
*Some will argue it is at the end of the process, or is the process, since one loses PR status if not appealed. I'm not going to argue semantics on that.
If you lose the appeal, basically you lose PR status. Losing PR status does not preclude you applying and getting PR status again, however that may be unlikely.
Compared to applying from abroad for a PRTD: in brief, the visa offices abroad are more strict than at the borders, so unless you have good H&C reasons, more likely to lose PR status. At the land border, they may have other priorities than writing 44(1) reports, and/or may decide to let the applicant 'prove themselves' by remaining.