Question 2: Claim 1 has many periods, which is an exaggeration. General institutions will not make such common-sense mistakes. The application documents shall be written by the inventor himself. In the supplement, the period should be changed to a comma (or other punctuation marks), or you can communicate with the examiner by phone first to explain that it is a clerical error.
Give you some advice about this case:
1, it is best to communicate with the examiner by telephone before modification to confirm whether the examiner accepts the modified content or not, so as to avoid being directly rejected;
2. If you apply for a patent in the future, you must find an agency. If this is an agent, I suggest you change it quickly.
3. If the problem in the claim is serious, in order to prevent the applicant from disclosing the technology and being unable to obtain effective protection, it is suggested to claim the priority of the case as soon as possible and file a new patent application (the case has just been corrected, and it shall not exceed 12 months, if it exceeds 12 months, it can be admitted).
The above answers have basically covered all possible situations and should solve your problem.