Hello there,
when you seek advice, better to give more about your case. for instance what is the work permit based on, what's the condition imposed on your permit, under what category you applied for PR and much more.
based on the info you provided these are your answers:
1- you can apply to renew the wp from 120 days to its expiry. it's been said that apply no later than 30 days prior expiry. But many applied in the last week or even day.
2- we don't use the term " work visa " if you applied within CANADA. it called Work Permit. in general, unless you become a permanent resident of Canada your visitor visa is valid until the expiry of its date. Having said that IRCC may void your visa at any time. here are some scenarios: if you came to Canada with a visitor visa and then claimed for refugee status, then your visa is probably no more valid ( if you were issued a removal order)
Or in general, if you become inadmissible at any time.
3- take a look at your permit and the condition on that. Once you applied to renew your permit within Canada, You are under implied status which lets you work for the same employer as long as you are inside Canada until a decision is made on your renewal. based on the decision on your wp renewal, you may have some options. for more details consult with a regulated immigration consultant or a lawyer.
your file is pending a final decision. At some points under Background check, they share and receive data from different partners. there may be some confusion in the data they have found and what you declared. don't worry at all. at this point, you may request CBSA notes and you may find out more about your case.
champion e ki budi to