I don't think there is a time limit in order to get the stop sign removed. It will obviously be in the company's best interest to get updated on all the required filings (financial statements) as soon as possible, especially if like the tweet mentioned, they are planning an APO.
Sorry for the long post, but it could be helpful to others.
An APO would require the company to be SEC compliant and that disclosure process would be followed.
Since TRKG is a pink, they don't have to be SEC compliant.
It appears a company can remove the stop sign at any point in time if they are willing to put in the work to become current, whether through the SEC or OTC Pink disclosure guidelines. Note: If a company chooses to follow another reporting standard such as the International Reporting Standard or SEC Reporting Standard, it meets the Alternative Reporting Standard requirements. Pinks can choose to be SEC Reporting.
A company that has an Annual Report or Quarterly Report filed in the last 6 months, but is 45 days late (but no more than 60 days late) on an Annual or Quarterly Report enters the Limited Information tier and gets a Yield Sign.
If the above company allows 60 days to pass without an updated Quarterly or annual report (based on what time of year it is), a Stop Sign is posted on OTCmarkets which corresponds to the No Information tier.
To remove the stop sign a company has to become current. If using the Alternative Reporting Standard (ARS) they will have to provide the required filings (Quarterly and Annual Reports) with financial statements following the GAAP Standards. A pink company can choose to be SEC compliant and disclose information and filings to the SEC's EDGAR system.
Since TRKG has a stop sign they were at one point in their history "Current" so they had done the "Initial Qualification" including the 2 years of required financial statements. However, it has been a long time since they were current, so they may have to do the Initial Qualification again, requiring financial statements from the previous 2 years. Otherwise they will just need to file an updated Quarterly Report to remove the stop sign.